shop vs shopping

shop and shopping both are nouns.

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

shop (noun)	shopping (noun)
a course of instruction in a trade (as carpentry or electricity)	searching for or buying goods or services
a mercantile establishment for the retail sale of goods or services	the commodities purchased from stores
small workplace where handcrafts or manufacturing are done

shop (verb)	shopping (verb)
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