odor vs olfactory perception

odor and olfactory perception both are nouns.

Word	Noun	Adjective	Verb	Adverb
odor	Yes	No	No	No
olfactory perception	Yes	No	No	No

As nouns, odor and olfactory perception are synonyms defined as:

odor and olfactory perception: the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form

Other synonyms of odor include odour, olfactory sensation, smell.

odor (noun)	olfactory perception (noun)
any property detected by the olfactory system	the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form
the sensation that results when olfactory receptors in the nose are stimulated by particular chemicals in gaseous form