unload vs put down

unload and put down both are verbs.

Word	Noun	Adjective	Verb	Adverb
unload	No	No	Yes	No
put down	No	No	Yes	No

As verbs, unload and put down are synonyms defined as:

Other synonyms of unload include discharge, drop, drop off, set down.

unload (verb)	put down (verb)
remove the load from (a container or vehicle)	put down in writing; of texts, musical compositions, etc.
remove (cargo, people, etc.) from and leave	make a record of; set down in permanent form
	put in a horizontal position
	remove (cargo, people, etc.) from and leave
	cause to sit or seat or be in a settled position or place
	put (an animal) to death
	reduce in worth or character, usually verbally
	cause to come to the ground