require vs requirement

require is not a noun while requirement is a noun.

Word	Noun	Adjective	Verb	Adverb
require	No	No	Yes	No
requirement	Yes	No	No	No

require (noun)	requirement (noun)
	something that is required in advance
	required activity
	anything indispensable

require (verb)	requirement (verb)
make someone do something
consider obligatory; request and expect
have need of
require as useful, just, or proper