yowl vs outcry

yowl and outcry both are nouns.

Word	Noun	Adjective	Verb	Adverb
yowl	Yes	No	Yes	No
outcry	Yes	No	Yes	No

As nouns, outcry is a hypernym of yowl; that is, outcry is a word with a broader meaning than yowl:

Other hypernyms of yowl include call, cry, shout, vociferation, yell.

yowl (noun)	outcry (noun)
a very loud utterance (like the sound of an animal)	a loud utterance; often in protest or opposition

yowl (verb)	outcry (verb)
utter shrieks, as of cats	utter aloud; often with surprise, horror, or joy
cry loudly, as of animals	shout louder than