scratch out vs erase

scratch out and erase both are verbs.

Word	Noun	Adjective	Verb	Adverb
scratch out	No	No	Yes	No
erase	No	No	Yes	No

As verbs, erase is a hypernym of scratch out; that is, erase is a word with a broader meaning than scratch out:

Other hypernyms of scratch out include efface, rub out, score out, wipe off.

scratch out (verb)	erase (verb)
strike or cancel by or as if by rubbing or crossing out	remove from memory or existence
	wipe out digitally or magnetically recorded information
	remove by or as if by rubbing or erasing