come vs put down

come is a noun but put down is not a noun.

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

As verbs, put down is a hyponym of come; that is, put down is a word with a more specific, narrower meaning than come:

come (noun)	put down (noun)
the thick white fluid containing spermatozoa that is ejaculated by the male genital tract

come (verb)	put down (verb)
come to pass; arrive, as in due course	put down in writing; of texts, musical compositions, etc.
be found or available	make a record of; set down in permanent form
reach or enter a state, relation, condition, use, or position	put in a horizontal position
happen as a result	remove (cargo, people, etc.) from and leave
have a certain priority	cause to sit or seat or be in a settled position or place
come to one's mind; suggest itself	put (an animal) to death
move toward, travel toward something or somebody or approach something or somebody	reduce in worth or character, usually verbally
be received	cause to come to the ground
cover a certain distance
reach a destination; arrive by movement or progress
experience orgasm
come under, be classified or included
proceed or get along
extend or reach
to be the product or result
exist or occur in a certain point in a series
be a native of
to measure up to in kind or quality
add up in number or quantity
come forth
come from; be connected by a relationship of blood, for example