counselor vs adviser

counselor and adviser both are nouns.

Word	Noun	Adjective	Verb	Adverb
counselor	Yes	No	No	No
adviser	Yes	No	No	No

As nouns, adviser is a hypernym of counselor; that is, adviser is a word with a broader meaning than counselor:

Other hypernyms of counselor include advisor, consultant.

counselor (noun)	adviser (noun)
a lawyer who pleads cases in court	an expert who gives advice
someone who gives advice about problems
someone who has supervisory duties at a summer camp