shop vs purchase

shop and purchase both are nouns.

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

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

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