warrior vs insurgent

warrior and insurgent both are nouns.

Word	Noun	Adjective	Verb	Adverb
warrior	Yes	No	No	No
insurgent	Yes	Yes	No	No

As nouns, insurgent is a hyponym of warrior; that is, insurgent is a word with a more specific, narrower meaning than warrior:

warrior: someone engaged in or experienced in warfare
insurgent: a member of an irregular armed force that fights a stronger force by sabotage and harassment

Other hyponyms of warrior include brave, centurion, Crusader, guerilla, guerrilla, irregular, samurai.

warrior (noun)	insurgent (noun)
someone engaged in or experienced in warfare	a person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions)
	a member of an irregular armed force that fights a stronger force by sabotage and harassment

warrior (adjective)	insurgent (adjective)
	in opposition to a civil authority or government