marketing vs selling

marketing and selling both are nouns.

Word	Noun	Adjective	Verb	Adverb
marketing	Yes	No	No	No
selling	Yes	No	No	No

As nouns, marketing and selling are synonyms defined as:

Other synonyms of marketing include merchandising.

marketing (noun)	selling (noun)
the exchange of goods for an agreed sum of money	the exchange of goods for an agreed sum of money
shopping at a market
the commercial processes involved in promoting and selling and distributing a product or service