let out vs shoot

let out is not a noun while shoot is a noun.

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

As verbs, shoot is a hyponym of let out; that is, shoot is a word with a more specific, narrower meaning than let out:

let out (noun)	shoot (noun)
	the act of shooting at targets
	a new branch

let out (verb)	shoot (verb)
make (clothes) larger	give an injection to
make known to the public information that was previously known only to a few people or that was meant to be kept a secret	produce buds, branches, or germinate
express audibly; utter sounds (not necessarily words)	measure the altitude of by using a sextant
bring out of a specific state	record on photographic film
	make a film or photograph of something
	utter fast and forcefully
	fire a shot; release
	hit with a missile from a weapon
	score
	spend frivolously and unwisely
	force or drive (a fluid or gas) into by piercing
	throw or propel in a specific direction or towards a specific objective
	throw dice, as in a crap game
	variegate by interweaving weft threads of different colors
	run or move very quickly or hastily
	move quickly and violently
	send forth suddenly, intensely, swiftly
	cause a sharp and sudden pain in
	kill by firing a missile
	emit (as light, flame, or fumes) suddenly and forcefully