The main difference between Earth and World is that the Earth is a third planet from the Sun in the Solar System and World is a planet Earth and all life upon it, including human civilization.
Earth is the third planet from the Sun, and the only astronomical object known to harbor life. According to radiometric dating and other sources of evidence, Earth formed over 4.5 billion years ago. Earth’s gravity interacts with other objects in space, especially the Sun and the Moon, Earth’s only natural satellite. Earth orbits around the Sun in 365.26 days, a period known as an Earth year. During this time, Earth rotates about its axis about 366.26 times.Earth’s axis of rotation is tilted with respect to its orbital plane, producing seasons on Earth. The gravitational interaction between Earth and the Moon causes tides, stabilizes Earth’s orientation on its axis, and gradually slows its rotation. Earth is the densest planet in the Solar System and the largest and most massive of the four terrestrial planets.Earth’s lithosphere is divided into several rigid tectonic plates that migrate across the surface over many millions of years. About 71% of Earth’s surface is covered with water, mostly by oceans. The remaining 29% is land consisting of continents and islands that together contain many lakes, rivers and other sources of water that contribute to the hydrosphere. The majority of Earth’s polar regions are covered in ice, including the Antarctic ice sheet and the sea ice of the Arctic ice pack. Earth’s interior remains active with a solid iron inner core, a liquid outer core that generates the Earth’s magnetic field, and a convecting mantle that drives plate tectonics.
Within the first billion years of Earth’s history, life appeared in the oceans and began to affect the Earth’s atmosphere and surface, leading to the proliferation of aerobic and anaerobic organisms. Some geological evidence indicates that life may have arisen as much as 4.1 billion years ago. Since then, the combination of Earth’s distance from the Sun, physical properties, and geological history have allowed life to evolve and thrive. In the history of the Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinction events. Over 99% of all species that ever lived on Earth are extinct. Estimates of the number of species on Earth today vary widely; most species have not been described. Over 7.6 billion humans live on Earth and depend on its biosphere and natural resources for their survival. Humans have developed diverse societies and cultures; politically, the world has about 200 sovereign states.
The world is the planet Earth and all life on it, including human civilization. In a philosophical context, the “world” is the whole of the physical Universe, or an ontological world (the “world” of an individual). In a theological context, the world is the material or the profane sphere, as opposed to the celestial, spiritual, transcendent or sacred spheres. “End of the world” scenarios refer to the end of human history, often in religious contexts.
The history of the world is commonly understood as spanning the major geopolitical developments of about five millennia, from the first civilizations to the present. In terms such as world religion, world language, world government, and world war, the term world suggests an international or intercontinental scope without necessarily implying participation of every part of the world.
The world population is the sum of all human populations at any time; similarly, the world economy is the sum of the economies of all societies or countries, especially in the context of globalization. Terms such as “world championship”, “gross world product”, and “world flags” imply the sum or combination of all sovereign states.
Earth (proper noun)
Our planet, third out from the Sun; see main entry Earth.
“The astronauts saw the earth from the porthole.”
“This is good earth for growing potatoes.”
Any general rock-based material.
“She sighed when the plane’s wheels finally touched earth.”
The ground, land (as opposed to the sky or sea).
“Birds are of the sky, not of the earth.”
A connection electrically to the earth (US ground); on equipment: a terminal connected in that manner.
A fox’s home or lair.
The world of our current life (as opposed to heaven or an afterlife).
The aforementioned soil- or rock-based material, considered one of the four or five classical elements.
To connect electrically to the earth.
“That noise is because the amplifier is not properly earthed.”
Human collective existence; existence in general.
“There will always be lovers, till the world’s end.”
“People are dying of starvation all over the world.”
A planet, especially one which is inhabited or inhabitable.
“Our mission is to travel the galaxy and find new worlds.”
A very large extent of country.
“the New World”
A realm, such as planet, containing one or multiple societies of beings, specially intelligent ones.
“the world of Narnia; the Wizarding World of Harry Potter; a zombie world”
The part of an operating system distributed with the kernel, consisting of the shell and other programs.
A subdivision of a game, consisting of a series of stages or levels that usually share a similar environment or theme.
“Have you reached the boss at the end of the ice world?”
“There’s a hidden warp to the next world down this pipe.”
The twenty-second trump or major arcana card of the tarot.
A great amount.
“Taking a break from work seems to have done her a world of good.”
“You’re going to be in a world of trouble when your family finds out.”
“a world of difference; a world of embarrassment”
To consider or cause to be considered from a global perspective; to consider as a global whole, rather than making or focussing on national or other distinctions; compare globalise.
To make real; to make worldly.
the planet on which we live; the world
“the diversity of life on earth”
the surface of the world as distinct from the sky or the sea
“the pilot brought the plane gently back to earth”
the present abode of humankind, as distinct from heaven or hell
“God’s will be done on earth as it is in heaven”
the substance of the land surface; soil
“a layer of earth”
one of the four elements in ancient and medieval philosophy and in astrology (considered essential to the nature of the signs Taurus, Virgo, and Capricorn)
“an earth sign”
used in names of stable, dense, non-volatile inorganic substances, e.g. fuller’s earth
“these crayons are made with a mixture of native earths plus softeners such as China clay”
the substance of the human body
“we now commit his body to the ground: earth to earth, ashes to ashes, dust to dust”
electrical connection to the ground, regarded as having zero electrical potential.
“ensure metal fittings are electrically bonded to earth”
the underground lair of a badger or fox.
connect (an electrical device) with the ground
“the front metal panels must be soundly earthed”
drive (a fox) to its underground lair.
(of a fox) run to its underground lair.
cover the root and lower stem of a plant with heaped-up earth
“the stems can be earthed up when the plant is about one foot high”
the earth, together with all of its countries and peoples
“it’s a wonderful world”
“he was doing his bit to save the world”
all of the people and societies on the earth
“the whole world hates a Monday”
denoting one of the most important people or things of their class
“a world superstar”
another planet like the earth
“the possibility of life on other worlds”
a particular region or group of countries
“the English-speaking world”
a particular period of history
“the ancient world”
a particular group of living things
“the animal world”
all that relates to a particular sphere of activity
“they were a legend in the world of British theatre”
“the news shocked the football world”
one’s life and activities
“he felt his whole world had collapsed”
human and social interaction
“he has almost completely withdrawn from the world”
secular or material matters as opposed to spiritual ones
“parents are not viewed as the primary educators of their own children, either in the world or in the Church”
a stage of human life, either mortal or after death
“in this world and the next”