skeptic vs intellectual

skeptic and intellectual both are nouns.

Word	Noun	Adjective	Verb	Adverb
skeptic	Yes	No	No	No
intellectual	Yes	Yes	No	No

As nouns, intellectual is a hypernym of skeptic; that is, intellectual is a word with a broader meaning than skeptic:

Other hypernyms of skeptic include intellect.

skeptic (noun)	intellectual (noun)
someone who habitually doubts accepted beliefs	a person who uses the mind creatively

skeptic (adjective)	intellectual (adjective)
	appealing to or using the intellect
	involving intelligence rather than emotions or instinct
	of or associated with or requiring the use of the mind