snivel vs speak

snivel is a noun but speak is not a noun.

Word	Noun	Adjective	Verb	Adverb
snivel	Yes	No	Yes	No
speak	No	No	Yes	No

As verbs, speak is a hypernym of snivel; that is, speak is a word with a broader meaning than snivel:

Other hypernyms of snivel include mouth, talk, utter, verbalise, verbalize.

snivel (noun)	speak (noun)
whining in a tearful manner
the act of breathing heavily through the nose (as when the nose is congested)

snivel (verb)	speak (verb)
snuff up mucus through the nose	express in speech
cry or whine with snuffling	exchange thoughts; talk with
talk in a tearful manner	use language
	give a speech to
	make a characteristic or natural sound