put down vs put

put down is not a noun while put is a noun.

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

As verbs, put is a hypernym of put down; that is, put is a word with a broader meaning than put down:

Other hypernyms of put down include lay, place, pose, position, set.

As verbs, put is a hypernym of put down; that is, put is a word with a broader meaning than put down:

Other hypernyms of put down include lay, place, pose, position, set.

put down (noun)	put (noun)
	the option to sell a given stock (or stock index or commodity future) at a given price before a given date

put down (verb)	put (verb)
put down in writing; of texts, musical compositions, etc.	arrange thoughts, ideas, temporal events
make a record of; set down in permanent form	estimate
put in a horizontal position	formulate in a particular style or language
remove (cargo, people, etc.) from and leave	attribute or give
cause to sit or seat or be in a settled position or place	put into a certain place or abstract location
put (an animal) to death	cause to be in a certain state; cause to be in a certain relation
reduce in worth or character, usually verbally	adapt
cause to come to the ground	cause (someone) to undergo something
	make an investment