screak vs scream

screak is not a noun while scream is a noun.

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

As verbs, scream is a hypernym of screak; that is, scream is a word with a broader meaning than screak:

Other hypernyms of screak include call, cry, holler, hollo, shout, shout out, squall, yell.

screak (noun)	scream (noun)
	sharp piercing cry
	a joke that seems extremely funny
	a high-pitched noise resembling a human cry

screak (verb)	scream (verb)
utter a harsh abrupt scream	utter a sudden loud cry
make a high-pitched, screeching noise	utter or declare in a very loud voice
	make a loud, piercing sound