stinkiness vs rankness

stinkiness and rankness both are nouns.

Word	Noun	Adjective	Verb	Adverb
stinkiness	Yes	No	No	No
rankness	Yes	No	No	No

As nouns, stinkiness and rankness are synonyms defined as:

stinkiness and rankness: the attribute of having a strong offensive smell

Other synonyms of stinkiness include fetidness, foulness, malodorousness.

stinkiness (noun)	rankness (noun)
the attribute of having a strong offensive smell	the attribute of having a strong offensive smell
	the property of producing abundantly and sustaining vigorous and luxuriant growth