represent vs representation

represent is not a noun while representation is a noun.

Word	Noun	Adjective	Verb	Adverb
represent	No	No	Yes	No
representation	Yes	No	No	No

represent (noun)	representation (noun)
	an activity that stands as an equivalent of something or results in an equivalent
	the act of representing; standing in for someone or some group and speaking with authority in their behalf
	a creation that is a visual or tangible rendering of someone or something
	the right of being represented by delegates who have a voice in some legislative body
	a presentation to the mind in the form of an idea or image
	a factual statement made by one party in order to induce another party to enter into a contract
	a performance of a play
	a statement of facts and reasons made in appealing or protesting
	a body of legislators that serve in behalf of some constituency
	the state of serving as an official and authorized delegate or agent

represent (verb)	representation (verb)
to establish a mapping (of mathematical elements or sets)
serve as a means of expressing something
express indirectly by an image, form, or model; be a symbol
point out or draw attention to in protest or remonstrance
bring forward and present to the mind
describe or present, usually with respect to a particular quality
create an image or likeness of
play a role or part
perform (a play), especially on a stage
be a delegate or spokesperson for; represent somebody's interest or be a proxy or substitute for, as of politicians and office holders representing their constituents, or of a tenant representing other tenants in a housing dispute
be representative or typical for
be the defense counsel for someone in a trial
form or compose
be typical of
take the place of or be parallel or equivalent to