propinquity vs proximity

propinquity and proximity both are nouns.

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

As nouns, propinquity and proximity are synonyms defined as:

propinquity (noun)	proximity (noun)
the property of being close together	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