squeak vs screak

squeak is a noun but screak is not a noun.

Word	Noun	Adjective	Verb	Adverb
squeak	Yes	No	Yes	No
screak	No	No	Yes	No

As verbs, squeak and screak are synonyms defined as:

Other synonyms of squeak include creak, screech, skreak, whine.

squeak (noun)	screak (noun)
something achieved (or escaped) by a narrow margin
a short high-pitched noise

squeak (verb)	screak (verb)
make a high-pitched, screeching noise	utter a harsh abrupt scream
	make a high-pitched, screeching noise