Main Difference
The main difference between Seed and Grain is that the Seed is a embryonic plant enclosed in a protective outer covering and Grain is a small, hard, dry seed used as food; may be ground into flour
Seed
A seed is an embryonic plant enclosed in a protective outer covering. The formation of the seed is part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiosperm plants.
Seeds are the product of the ripened ovule, after fertilization by pollen and some growth within the mother plant. The embryo is developed from the zygote and the seed coat from the integuments of the ovule.
Seeds have been an important development in the reproduction and success of gymnosperm and angiosperm plants, relative to more primitive plants such as ferns, mosses and liverworts, which do not have seeds and use water-dependent means to propagate themselves. Seed plants now dominate biological niches on land, from forests to grasslands both in hot and cold climates.
The term “seed” also has a general meaning that antedates the above – anything that can be sown, e.g. “seed” potatoes, “seeds” of corn or sunflower “seeds”. In the case of sunflower and corn “seeds”, what is sown is the seed enclosed in a shell or husk, whereas the potato is a tuber.
Many structures commonly referred to as “seeds” are actually dry fruits. Plants producing berries are called baccate. Sunflower seeds are sometimes sold commercially while still enclosed within the hard wall of the fruit, which must be split open to reach the seed. Different groups of plants have other modifications, the so-called stone fruits (such as the peach) have a hardened fruit layer (the endocarp) fused to and surrounding the actual seed. Nuts are the one-seeded, hard-shelled fruit of some plants with an indehiscent seed, such as an acorn or hazelnut.
Grain
A grain is a small, hard, dry seed, with or without an attached hull or fruit layer, harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and legumes.
After being harvested, dry grains are more durable than other staple foods, such as starchy fruits (plantains, breadfruit, etc.) and tubers (sweet potatoes, cassava, and more). This durability has made grains well suited to industrial agriculture, since they can be mechanically harvested, transported by rail or ship, stored for long periods in silos, and milled for flour or pressed for oil. Thus, major global commodity markets exist for maize, rice, soybeans, wheat and other grains but not for tubers, vegetables, or other crops.
Seed (noun)
A fertilized grain, initially encased in a fruit, which may grow into a mature plant.
“If you plant a seed in the spring, you may have a pleasant surprise in the autumn.”
Seed (noun)
A fertilized ovule, containing an embryonic plant.
Seed (noun)
An amount of fertilized grain that cannot be readily counted.
“The entire field was covered with geese eating the freshly sown seed.”
Seed (noun)
Semen.
“A man must use his seed to start and raise a family.”
Seed (noun)
A precursor.
“germ”
“the seed of an idea; which idea was the seed (idea)?”
Seed (noun)
The initial state, condition or position of a changing, growing or developing process; the ultimate precursor in a defined chain of precursors.
Seed (noun)
The initial position of a competitor or team in a tournament. (seed position)
“The team with the best regular season record receives the top seed in the conference tournament.”
Seed (noun)
The competitor or team occupying a given seed. (seed position)
“The rookie was a surprising top seed.”
Seed (noun)
Initialization state of a pseudorandom number generator (PRNG). (seed number)
“If you use the same seed you will get exactly the same pattern of numbers.”
Seed (noun)
Offspring, descendants, progeny.
“the seed of Abraham”
Seed (noun)
Race; generation; birth.
Seed (noun)
A small bubble formed in imperfectly fused glass.
Seed (verb)
To plant or sow an area with seeds.
“I seeded my lawn with bluegrass.”
Seed (verb)
To cover thinly with something scattered; to ornament with seedlike decorations.
Seed (verb)
To start; to provide, assign or determine the initial resources for, position of, state of.
“A venture capitalist seeds young companies.”
“The tournament coordinator will seed the starting lineup with the best competitors from the qualifying round.”
“The programmer seeded fresh, uncorrupted data into the database before running unit tests.”
Seed (verb)
To allocate a seeding to a competitor.
Seed (verb)
To leave (files) available for others to download through peer-to-peer file sharing protocols (e.g. BitTorrent).
Seed (verb)
To be qualified to compete, especially in a quarter-final, semi-final{{,}} or final.
“The tennis player seeded into the quarters.”
Seed (verb)
To produce seed.
Seed (verb)
To grow to maturity.
Seed (verb)
To ejaculate inside the penetratee during intercourse, especially in the rectum.
Seed (verb)
simple past tense and past participle of see
Grain (noun)
The harvested seeds of various grass food crops eg: wheat, corn, barley.
“We stored a thousand tons of grain for the winter.”
Grain (noun)
Similar seeds from any food crop, eg buckwheat, amaranth, quinoa.
Grain (noun)
A single seed of grass food crops.
“a grain of wheat”
“grains of oat”
Grain (noun)
The crops from which grain is harvested.
“The fields were planted with grain.”
Grain (noun)
A linear texture of a material or surface.
“Cut along the grain of the wood.”
“He doesn’t like to shave against the grain.”
Grain (noun)
A single particle of a substance.
“a grain of sand”
“a grain of salt”
Grain (noun)
A very small unit of weight, in England equal to 1/480 of an ounce troy, 0.0648 grams or, to be more exact, 64.79891 milligrams (0.002285714 avoirdupois ounce). A carat grain or pearl grain is 1/4 carat or 50 milligrams. The old French grain was 1/9216 livre or 53.11 milligrams, and in the mesures usuelles permitted from 1812 to 1839, with the livre redefined as 500 grams, it was 54.25 milligrams.
Grain (noun)
A former unit of gold purity, also known as carat grain, equal to 4 “carat” (karat).
Grain (noun)
A region within a material having a single crystal structure or direction.
Grain (noun)
A reddish dye made from the coccus insect, or kermes; hence, a red color of any tint or hue, as crimson, scarlet, etc.; sometimes used by the poets as equivalent to Tyrian purple.
Grain (noun)
The hair side of a piece of leather, or the marking on that side.
Grain (noun)
The remains of grain, etc., after brewing or distillation; hence, any residuum. Also called draff.
Grain (noun)
A rounded prominence on the back of a sepal, as in the common dock.
Grain (noun)
Temper; natural disposition; inclination.
Grain (noun)
Visual texture in processed photographic film due to the presence of small particles of a metallic silver, or dye clouds, developed from silver halide that have received enough photons.
Grain (noun)
A branch of a tree; a stalk or stem of a plant.
Grain (noun)
A tine, prong, or fork.
Grain (noun)
One of the branches of a valley or river.
Grain (noun)
An iron fish spear or harpoon, with a number of points half-barbed inwardly.
Grain (noun)
A thin piece of metal, used in a mould to steady a core.
Grain (verb)
To feed grain to.
Grain (verb)
To make granular; to form into grains.
Grain (verb)
To form grains, or to assume a granular form, as the result of crystallization; to granulate.
Grain (verb)
To texture a surface in imitation of the grain of a substance such as wood.
Grain (verb)
To remove the hair or fat from a skin.
Grain (verb)
To soften leather.
Grain (verb)
To yield fruit.
Grain (noun)
wheat or any other cultivated cereal used as food.
Grain (noun)
the seeds of wheat or other cultivated cereals.
Grain (noun)
a single fruit or seed of a cereal
“a few grains of corn”
Grain (noun)
a small hard particle of a substance such as salt or sand
“a grain of salt”
Grain (noun)
the smallest possible quantity or amount of a quality
“there wasn’t a grain of truth in what he said”
Grain (noun)
a discrete particle or crystal in a metal, igneous rock, etc., typically visible only when a surface is magnified.
Grain (noun)
a piece of solid propellant for use in a rocket engine.
Grain (noun)
the smallest unit of weight in the troy and avoirdupois systems, equal to 1/5760 of a pound troy and 1/7000 of a pound avoirdupois (approximately 0.0648 gram).
Grain (noun)
the longitudinal arrangement or pattern of fibres in wood, paper, etc.
“he scored along the grain of the table with the knife”
Grain (noun)
the texture of wood, stone, etc., as determined by the arrangement and size of constituent particles
“the lighter, finer grain of the wood is attractive”
Grain (noun)
the rough or wrinkled outer surface of leather, or of a similar artificial material.
Grain (noun)
lamination or planes of cleavage in materials such as stone and coal.
Grain (noun)
a grainy appearance of a photograph or negative, which is in proportion to the size of the emulsion particles composing it.
Grain (noun)
a person’s character or natural tendency.
Grain (noun)
kermes or cochineal, or dye made from either of these.
Grain (verb)
give a rough surface or texture to
“her fingers were grained with chalk dust”
Grain (verb)
form into grains
“if the sugar does grain up, add more water”
Grain (verb)
paint (especially furniture or interior surfaces) in imitation of the grain of wood or marble.
Grain (verb)
remove hair from (a hide).
Grain (verb)
feed (a horse) on grain.