affect vs concern

affect and concern both are nouns.

Word	Noun	Adjective	Verb	Adverb
affect	Yes	No	Yes	No
concern	Yes	No	Yes	No

As verbs, concern is a hypernym of affect; that is, concern is a word with a broader meaning than affect:

Other hypernyms of affect include bear on, come to, have to do with, pertain, refer, relate, touch, touch on.

affect (noun)	concern (noun)
the conscious subjective aspect of feeling or emotion	something that interests you because it is important or affects you
	something or someone that causes anxiety; a source of unhappiness
	a feeling of sympathy for someone or something
	an anxious feeling
	a commercial or industrial enterprise and the people who constitute it

affect (verb)	concern (verb)
act physically on; have an effect upon	be relevant to
have an effect upon	be on the mind of
make believe with the intent to deceive
have an emotional or cognitive impact upon
connect closely and often incriminatingly