hue and cry vs yell

hue and cry and yell both are nouns.

Word	Noun	Adjective	Verb	Adverb
hue and cry	Yes	No	No	No
yell	Yes	No	Yes	No

As nouns, yell is a hypernym of hue and cry; that is, yell is a word with a broader meaning than hue and cry:

Other hypernyms of hue and cry include call, cry, outcry, shout, vociferation.

hue and cry (noun)	yell (noun)
loud and persistent outcry from many people	a loud utterance; often in protest or opposition
	a loud utterance of emotion (especially when inarticulate)

hue and cry (verb)	yell (verb)
	utter or declare in a very loud voice
	utter a sudden loud cry