enter vs shoot

enter is not a noun while shoot is a noun.

Word	Noun	Adjective	Verb	Adverb
enter	No	No	Yes	No
shoot	Yes	No	Yes	No

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

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

enter (verb)	shoot (verb)
set out on (an enterprise or subject of study)	give an injection to
make a record of; set down in permanent form	produce buds, branches, or germinate
become a participant; be involved in	measure the altitude of by using a sextant
put or introduce into something	record on photographic film
come on stage	make a film or photograph of something
to come or go into	utter fast and forcefully
take on duties or office	fire a shot; release
register formally as a participant or member	hit with a missile from a weapon
be or play a part of or in	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