potato chip vs crisp

potato chip and crisp both are nouns.

Word	Noun	Adjective	Verb	Adverb
potato chip	Yes	No	No	No
crisp	Yes	Yes	Yes	No

As nouns, potato chip and crisp are synonyms defined as:

Other synonyms of potato chip include chip, Saratoga chip.

potato chip (noun)	crisp (noun)
a thin crisp slice of potato fried in deep fat	a thin crisp slice of potato fried in deep fat

potato chip (adjective)	crisp (adjective)
	pleasantly cold and invigorating
	brief and to the point; effectively cut short
	(of hair) in small tight curls
	(of something seen or heard) clearly defined
	pleasingly firm and fresh
	tender and brittle

potato chip (verb)	crisp (verb)
	make brown and crisp by heating
	make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in; `crisp' is archaic