endorser vs admirer

endorser and admirer both are nouns.

Word	Noun	Adjective	Verb	Adverb
endorser	Yes	No	No	No
admirer	Yes	No	No	No

As nouns, admirer is a hypernym of endorser; that is, admirer is a word with a broader meaning than endorser:

Other hypernyms of endorser include booster, champion, friend, protagonist, supporter.

endorser (noun)	admirer (noun)
someone who expresses strong approval	someone who admires a young woman
a person who transfers his ownership interest in something by signing a check or negotiable security	a person who backs a politician or a team etc.
	a person who admires; someone who esteems or respects or approves