ductileness vs ductility

ductileness and ductility both are nouns.

Word	Noun	Adjective	Verb	Adverb
ductileness	Yes	No	No	No
ductility	Yes	No	No	No

As nouns, ductileness and ductility are synonyms defined as:

ductileness and ductility: the malleability of something that can be drawn into threads or wires or hammered into thin sheets

ductileness (noun)	ductility (noun)
the malleability of something that can be drawn into threads or wires or hammered into thin sheets	the malleability of something that can be drawn into threads or wires or hammered into thin sheets