affirm vs claim

affirm is not a noun while claim is a noun.

Word	Noun	Adjective	Verb	Adverb
affirm	No	No	Yes	No
claim	Yes	No	Yes	No

As verbs, claim is a hyponym of affirm; that is, claim is a word with a more specific, narrower meaning than affirm:

Other hyponyms of affirm include hold, take, attest, declare, protest, assure, tell.

As verbs, claim is a hyponym of affirm; that is, claim is a word with a more specific, narrower meaning than affirm:

Other hyponyms of affirm include reaffirm, confirm, reassert, defend, maintain.

affirm (noun)	claim (noun)
	demand for something as rightful or due
	an established or recognized right
	an informal right to something
	an assertion of a right (as to money or property)
	a demand
	an assertion that something is true or factual

affirm (verb)	claim (verb)
establish or strengthen as with new evidence or facts	assert or affirm strongly; state to be true or existing
to declare or affirm solemnly and formally as true	take as an undesirable consequence of some event or state of affairs
say yes to	ask for legally or make a legal claim to, as of debts, for example
	lay claim to; as of an idea
	demand as being one's due or property; assert one's right or title to