quadrangle vs quad

quadrangle and quad both are nouns.

Word	Noun	Adjective	Verb	Adverb
quadrangle	Yes	No	No	No
quad	Yes	No	No	No

As nouns, quadrangle and quad are synonyms defined as:

quadrangle and quad: a rectangular area surrounded on all sides by buildings

quadrangle (noun)	quad (noun)
a rectangular area surrounded on all sides by buildings	a rectangular area surrounded on all sides by buildings
a four-sided polygon	(printing) a block of type without a raised letter; used for spacing between words or sentences
	a muscle of the thigh that extends the leg
	one of four children born at the same time from the same pregnancy