snarl vs speak

snarl is a noun but speak is not a noun.

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

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

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

snarl (noun)	speak (noun)
something jumbled or confused
a vicious angry growl
an angry vicious expression

snarl (verb)	speak (verb)
make more complicated or confused through entanglements	express in speech
utter in an angry, sharp, or abrupt tone	exchange thoughts; talk with
make a snarling noise or move with a snarling noise	use language
twist together or entwine into a confusing mass	give a speech to
	make a characteristic or natural sound