squawk vs skreak

squawk is a noun but skreak is not a noun.

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

As verbs, squawk and skreak are synonyms defined as:

Other synonyms of squawk include screak, screech, skreigh.

squawk (noun)	skreak (noun)
informal terms for objecting
the noise of squawking

squawk (verb)	skreak (verb)
complain	utter a harsh abrupt scream
utter a harsh abrupt scream	make a high-pitched, screeching noise