snitch vs squealer

snitch and squealer both are nouns.

Word	Noun	Adjective	Verb	Adverb
snitch	Yes	No	Yes	No
squealer	Yes	No	No	No

As nouns, squealer is a hypernym of snitch; that is, squealer is a word with a broader meaning than snitch:

snitch: someone acting as an informer or decoy for the police
squealer: one who reveals confidential information to the police or other authority

Other hypernyms of snitch include betrayer, blabber, informer, rat.

snitch (noun)	squealer (noun)
someone acting as an informer or decoy for the police	domestic swine
	one who reveals confidential information to the police or other authority

snitch (verb)	squealer (verb)
give away information about somebody
take by theft