capillarity vs capillary action

capillarity and capillary action both are nouns.

Word	Noun	Adjective	Verb	Adverb
capillarity	Yes	No	No	No
capillary action	Yes	No	No	No

As nouns, capillarity and capillary action are synonyms defined as:

capillarity and capillary action: a phenomenon associated with surface tension and resulting in the elevation or depression of liquids in capillaries

capillarity (noun)	capillary action (noun)
a phenomenon associated with surface tension and resulting in the elevation or depression of liquids in capillaries	a phenomenon associated with surface tension and resulting in the elevation or depression of liquids in capillaries