Main Difference
The main difference between Pitchfork and Trident is that the Pitchfork is a Agricultural/Garden tool and Trident is a three-prong spear.
Pitchfork
A pitchfork is an agricultural tool with a long handle and tynes used to lift and pitch or throw loose material, such as hay, straw or leaves.
Trident
A trident is a three-pronged spear. It is used for spear fishing and historically as a polearm. The trident is the weapon of Poseidon, or Neptune, the God of the Sea in classical mythology. In Hindu mythology, it is the weapon of Shiva, known as trishula (Sanskrit for “triple-spear”). It has been used by farmers as a decorticator to remove leaves, seeds and buds from the stalks of plants such as flax and hemp.
Pitchfork (noun)
An agricultural tool comprising a fork attached to a long handle used for pitching hay or bales of hay high up onto a haystack.
Pitchfork (noun)
A tuning fork.
Pitchfork (verb)
To toss or carry with a pitchfork.
“The hay was soon pitchforked onto the wagon.”
Trident (noun)
A three-pronged spear somewhat resembling a pitchfork.
“Poseidon’s trident”
Trident (noun)
A curve of third order of the form:
“xy+ax^3+bx^2+cx=d,”
Pitchfork (noun)
a farm tool with a long handle and two sharp metal prongs, used for lifting hay.
Pitchfork (verb)
lift with a pitchfork
“once mixed, the sticky mass is pitchforked up on to the walls”
Pitchfork (verb)
thrust (someone) suddenly into an unexpected and difficult situation
“he was pitchforked into the job for six months”
Trident (noun)
a three-pronged spear, especially as an attribute of Poseidon (Neptune) or Britannia.
Trident (noun)
a US design of submarine-launched long-range ballistic missile.