keenness vs avidity

keenness and avidity both are nouns.

Word	Noun	Adjective	Verb	Adverb
keenness	Yes	No	No	No
avidity	Yes	No	No	No

As nouns, keenness and avidity are synonyms defined as:

keenness and avidity: a positive feeling of wanting to push ahead with something

Other synonyms of keenness include avidness, eagerness.

keenness (noun)	avidity (noun)
thinness of edge or fineness of point	a positive feeling of wanting to push ahead with something
a quick and penetrating intelligence
a positive feeling of wanting to push ahead with something