Noun

Buying and selling in a market.

(uncountable) The promotion, distribution and selling of a product or service; includes market research and advertising.

*{{quote-magazine, title=No hiding place

, date=2013-05-25, volume=407, issue=8837, page=74, magazine=(The Economist) citation , passage=In America alone, people spent $170 billion on “direct marketing ”—junk mail of both the physical and electronic varieties—last year. Yet of those who received unsolicited adverts through the post, only 3% bought anything as a result.}}

Shopping, going to market.

* 1926 , (George Herriman), comic strip Us Husbands'', June 12th, 1926 (reprinted in the back of ''Krazy & Ignatz , vol. 1922–1924, Fantagraphics, 2012, ISBN 978-1-60699-477-1, p. 223):

[Wife to husband:] I'm going out to do my marketing – keep out of the kitchen, while I'm gone.

Noun

(en noun)

A company, business, organization, or other purposeful endeavor.

The (GSEs) are a group of financial services corporations which have been created by the United States Congress.

A micro-enterprise is defined as a business having 5 or fewer employees and a low seed capital.

An undertaking or project, especially a daring and courageous one.

Biosphere 2 was a scientific enterprise aimed at the exploration of the complex web of interactions within life systems.

A willingness to undertake new or risky projects; energy and initiative.

He has shown great enterprise throughout his early career.

an active participation in projects