fecundity vs fruitfulness

fecundity and fruitfulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
fecundity	Yes	No	No	No
fruitfulness	Yes	No	No	No

As nouns, fecundity and fruitfulness are synonyms defined as:

fecundity and fruitfulness: the quality of something that causes or assists healthy growth

As nouns, fecundity and fruitfulness are synonyms defined as:

fecundity and fruitfulness: the intellectual productivity of a creative imagination

fecundity (noun)	fruitfulness (noun)
the quality of something that causes or assists healthy growth	the quality of something that causes or assists healthy growth
the intellectual productivity of a creative imagination	the intellectual productivity of a creative imagination
the state of being fertile; capable of producing offspring