As nouns the difference between fruitfulness and fruition
is that fruitfulness is the state or quality of being fruitful; productiveness; fertility; fecundity; exuberant abundance while fruition is the fulfillment of something worked for.
fruitfulness
English
Noun
(-)
The state or quality of being fruitful; productiveness; fertility; fecundity; exuberant abundance.
References
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fruition
English
Etymology 1
From (etyl) .
Noun
(
en noun)
The fulfillment of something worked for.
The enjoyment derived from a possession.
Etymology 2
Erroneously from (fruit) (though now standard usage)
Noun
(
en noun)
The condition of bearing fruit.