honker vs olfactory organ

honker and olfactory organ both are nouns.

Word	Noun	Adjective	Verb	Adverb
honker	Yes	No	No	No
olfactory organ	Yes	No	No	No

As nouns, olfactory organ is a hypernym of honker; that is, olfactory organ is a word with a broader meaning than honker:

honker: informal terms for the nose
olfactory organ: the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals

Other hypernyms of honker include nose.

honker (noun)	olfactory organ (noun)
common greyish-brown wild goose of North America with a loud, trumpeting call	the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals
informal terms for the nose
a driver who causes his car's horn to make a loud honking sound