directivity vs directionality

directivity and directionality both are nouns.

Word	Noun	Adjective	Verb	Adverb
directivity	Yes	No	No	No
directionality	Yes	No	No	No

As nouns, directivity and directionality are synonyms defined as:

directivity and directionality: the property of a microphone or antenna of being more sensitive in one direction than in another

directivity (noun)	directionality (noun)
the property of a microphone or antenna of being more sensitive in one direction than in another	the property of a microphone or antenna of being more sensitive in one direction than in another
the quality of being directive	the property of being directional or maintaining a direction