purchase vs shop

purchase and shop both are nouns.

Word	Noun	Adjective	Verb	Adverb
purchase	Yes	No	Yes	No
shop	Yes	No	Yes	No

purchase (noun)	shop (noun)
the acquisition of something for payment	a course of instruction in a trade (as carpentry or electricity)
the mechanical advantage gained by being in a position to use a lever	a mercantile establishment for the retail sale of goods or services
a means of exerting influence or gaining advantage	small workplace where handcrafts or manufacturing are done
something acquired by purchase

purchase (verb)	shop (verb)
obtain by purchase; acquire by means of a financial transaction	give away information about somebody
	do one's shopping
	shop around; not necessarily buying
	do one's shopping at; do business with; be a customer or client of