fruitfulness vs fecundity

fruitfulness and fecundity both are nouns.

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

As nouns, fruitfulness and fecundity are synonyms defined as:

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

As nouns, fruitfulness and fecundity are synonyms defined as:

fruitfulness and fecundity: the intellectual productivity of a creative imagination

fruitfulness (noun)	fecundity (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