absorptivity vs absorption factor

absorptivity and absorption factor both are nouns.

Word	Noun	Adjective	Verb	Adverb
absorptivity	Yes	No	No	No
absorption factor	Yes	No	No	No

As nouns, absorptivity and absorption factor are synonyms defined as:

absorptivity and absorption factor: (physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body

absorptivity (noun)	absorption factor (noun)
(physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body	(physics) the property of a body that determines the fraction of the incident radiation or sound flux absorbed or absorbable by the body