prolificacy vs rankness

prolificacy and rankness both are nouns.

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

As nouns, prolificacy and rankness are synonyms defined as:

prolificacy and rankness: the property of producing abundantly and sustaining vigorous and luxuriant growth

Other synonyms of prolificacy include fertility, richness.

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