honker vs hooter

honker and hooter both are nouns.

Word	Noun	Adjective	Verb	Adverb
honker	Yes	No	No	No
hooter	Yes	No	No	No

As nouns, honker and hooter are synonyms defined as:

Other synonyms of honker include beak, nozzle, schnoz, schnozzle, snoot, snout.

honker (noun)	hooter (noun)
common greyish-brown wild goose of North America with a loud, trumpeting call	nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes
informal terms for the nose	a device on an automobile for making a warning noise
a driver who causes his car's horn to make a loud honking sound	informal terms for the nose