holler vs complain

holler is a noun but complain is not a noun.

Word	Noun	Adjective	Verb	Adverb
holler	Yes	No	Yes	No
complain	No	No	Yes	No

As verbs, complain is a hypernym of holler; that is, complain is a word with a broader meaning than holler:

Other hypernyms of holler include kick, kvetch, plain, quetch, sound off.

holler (noun)	complain (noun)
a very loud utterance (like the sound of an animal)
a small valley between mountains

holler (verb)	complain (verb)
complain	express complaints, discontent, displeasure, or unhappiness
utter a sudden loud cry	make a formal accusation; bring a formal charge
shout out