war whoop vs war cry

war whoop and war cry both are nouns.

Word	Noun	Adjective	Verb	Adverb
war whoop	Yes	No	No	No
war cry	Yes	No	No	No

As nouns, war whoop and war cry are synonyms defined as:

war whoop and war cry: a yell intended to rally a group of soldiers in battle

Other synonyms of war whoop include battle cry, rallying cry.

war whoop (noun)	war cry (noun)
a yell intended to rally a group of soldiers in battle	a yell intended to rally a group of soldiers in battle
	a slogan used to rally support for a cause