marketing vs dumping

marketing and dumping both are nouns.

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

As nouns, dumping is a hyponym of marketing; that is, dumping is a word with a more specific, narrower meaning than marketing:

marketing: the exchange of goods for an agreed sum of money
dumping: selling goods abroad at a price below that charged in the domestic market

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