proximity vs proximal

proximity is a noun but proximal is not a noun.

Word	Noun	Adjective	Verb	Adverb
proximity	Yes	No	No	No
proximal	No	Yes	No	No

proximity (noun)	proximal (noun)
the property of being close together
a Gestalt principle of organization holding that (other things being equal) objects or events that are near to one another (in space or time) are perceived as belonging together as a unit
the region close around a person or thing

proximity (adjective)	proximal (adjective)
	situated nearest to point of attachment or origin