fanatic vs rabid

fanatic is a noun but rabid is not a noun.

Word	Noun	Adjective	Verb	Adverb
fanatic	Yes	Yes	No	No
rabid	No	Yes	No	No

As adjectives, fanatic and rabid are synonyms defined as:

fanatic and rabid: marked by excessive enthusiasm for and intense devotion to a cause or idea

Other synonyms of fanatic include fanatical, overzealous.

fanatic (noun)	rabid (noun)
a person motivated by irrational enthusiasm (as for a cause)

fanatic (adjective)	rabid (adjective)
marked by excessive enthusiasm for and intense devotion to a cause or idea	of or infected by rabies
	marked by excessive enthusiasm for and intense devotion to a cause or idea