squawk vs yell

squawk and yell both are nouns.

Word	Noun	Adjective	Verb	Adverb
squawk	Yes	No	Yes	No
yell	Yes	No	Yes	No

As verbs, yell is a hypernym of squawk; that is, yell is a word with a broader meaning than squawk:

Other hypernyms of squawk include call, cry, holler, hollo, scream, shout, shout out, squall.

squawk (noun)	yell (noun)
informal terms for objecting	a loud utterance; often in protest or opposition
the noise of squawking	a loud utterance of emotion (especially when inarticulate)

squawk (verb)	yell (verb)
complain	utter or declare in a very loud voice
utter a harsh abrupt scream	utter a sudden loud cry