forest fire fighter vs ranger

forest fire fighter and ranger both are nouns.

Word	Noun	Adjective	Verb	Adverb
forest fire fighter	Yes	No	No	No
ranger	Yes	No	No	No

As nouns, forest fire fighter and ranger are synonyms defined as:

forest fire fighter and ranger: an official who is responsible for managing and protecting an area of forest

Other synonyms of forest fire fighter include fire warden.

forest fire fighter (noun)	ranger (noun)
an official who is responsible for managing and protecting an area of forest	an official who is responsible for managing and protecting an area of forest
	a member of a military unit trained as shock troops for hit-and-run raids