impotence vs sexual activity

impotence and sexual activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
impotence	Yes	No	No	No
sexual activity	Yes	No	No	No

impotence (noun)	sexual activity (noun)
the quality of lacking strength or power; being weak and feeble	activities associated with sexual intercourse
an inability (usually of the male animal) to copulate