rankness vs stinkiness

rankness and stinkiness both are nouns.

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

As nouns, rankness and stinkiness are synonyms defined as:

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

Other synonyms of rankness include fetidness, foulness, malodorousness.

rankness (noun)	stinkiness (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