strife vs struggle

strife and struggle both are nouns.

Word	Noun	Adjective	Verb	Adverb
strife	Yes	No	No	No
struggle	Yes	No	Yes	No

As nouns, struggle is a hypernym of strife; that is, struggle is a word with a broader meaning than strife:

Other hypernyms of strife include battle, conflict.

strife (noun)	struggle (noun)
bitter conflict; heated often violent dissension	strenuous effort
lack of agreement or harmony	an energetic attempt to achieve something
	an open clash between two opposing groups (or individuals)

strife (verb)	struggle (verb)
	be engaged in a fight; carry on a fight
	to exert strenuous effort against opposition
	climb awkwardly, as if by scrambling
	make a strenuous or labored effort