warrior vs samurai

warrior and samurai both are nouns.

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

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

warrior: someone engaged in or experienced in warfare
samurai: a Japanese warrior who was a member of the feudal military aristocracy

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

warrior (noun)	samurai (noun)
someone engaged in or experienced in warfare	feudal Japanese military aristocracy
	a Japanese warrior who was a member of the feudal military aristocracy