rankness vs olfactory property

rankness and olfactory property both are nouns.

Word	Noun	Adjective	Verb	Adverb
rankness	Yes	No	No	No
olfactory property	Yes	No	No	No

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

Other hypernyms of rankness include aroma, odor, odour, scent, smell.

rankness (noun)	olfactory property (noun)
the attribute of having a strong offensive smell	any property detected by the olfactory system
the property of producing abundantly and sustaining vigorous and luxuriant growth