aviation vs put down

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

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

aviation (noun)	put down (noun)
travel via aircraft
the art of operating aircraft
the aggregation of a country's military aircraft
the operation of aircraft to provide transportation

aviation (verb)	put down (verb)
	put down in writing; of texts, musical compositions, etc.
	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