yap away vs verbalise

yap away and verbalise both are verbs.

Word	Noun	Adjective	Verb	Adverb
yap away	No	No	Yes	No
verbalise	No	No	Yes	No

As verbs, verbalise is a hypernym of yap away; that is, verbalise is a word with a broader meaning than yap away:

Other hypernyms of yap away include mouth, speak, talk, utter, verbalize.

yap away (verb)	verbalise (verb)
talk incessantly and tiresomely	convert into a verb
	express in speech
	be verbose
	articulate; either verbally or with a cry, shout, or noise