gargle vs let out

gargle is a noun but let out is not a noun.

Word	Noun	Adjective	Verb	Adverb
gargle	Yes	No	Yes	No
let out	No	No	Yes	No

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

Other hypernyms of gargle include emit, let loose, utter.

gargle (noun)	let out (noun)
the sound produced while gargling
a medicated solution used for gargling and rinsing the mouth

gargle (verb)	let out (verb)
rinse one's mouth and throat with mouthwash	make (clothes) larger
utter with gargling or burbling sounds	make known to the public information that was previously known only to a few people or that was meant to be kept a secret
	express audibly; utter sounds (not necessarily words)
	bring out of a specific state