ambidexterity vs ambidextrousness

ambidexterity and ambidextrousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
ambidexterity	Yes	No	No	No
ambidextrousness	Yes	No	No	No

As nouns, ambidexterity and ambidextrousness are synonyms defined as:

ambidexterity and ambidextrousness: the property of being equally skillful with each hand

ambidexterity (noun)	ambidextrousness (noun)
the property of being equally skillful with each hand	the property of being equally skillful with each hand