gee vs call out

gee is a noun but call out is not a noun.

Word	Noun	Adjective	Verb	Adverb
gee	Yes	No	Yes	No
call out	No	No	Yes	No

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

Other hypernyms of gee include cry, cry out, exclaim, outcry, shout.

gee (noun)	call out (noun)
a unit of force equal to the force exerted by gravity; used to indicate the force to which a body is subjected when it is accelerated

gee (verb)	call out (verb)
give a command to a horse to turn to the right side	call out loudly, as of names or numbers
turn to the right side	utter aloud; often with surprise, horror, or joy
	challenge to a duel