hooter vs olfactory organ

hooter and olfactory organ both are nouns.

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

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

hooter: 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 hooter include nose.

hooter (noun)	olfactory organ (noun)
nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes	the organ of smell and entrance to the respiratory tract; the prominent part of the face of man or other mammals
a device on an automobile for making a warning noise
informal terms for the nose