piffle vs verbalise

piffle is a noun but verbalise is not a noun.

Word	Noun	Adjective	Verb	Adverb
piffle	Yes	No	Yes	No
verbalise	No	No	Yes	No

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

Other hypernyms of piffle include mouth, speak, talk, utter, verbalize.

piffle (noun)	verbalise (noun)
trivial nonsense

piffle (verb)	verbalise (verb)
act in a trivial or ineffective way	convert into a verb
speak (about unimportant matters) rapidly and incessantly	express in speech
	be verbose
	articulate; either verbally or with a cry, shout, or noise