selling vs mercantilism

selling and mercantilism both are nouns.

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

As nouns, mercantilism is a hypernym of selling; that is, mercantilism is a word with a broader meaning than selling:

selling: the exchange of goods for an agreed sum of money
mercantilism: transactions (sales and purchases) having the objective of supplying commodities (goods and services)

Other hypernyms of selling include commerce, commercialism.

selling (noun)	mercantilism (noun)
the exchange of goods for an agreed sum of money	transactions (sales and purchases) having the objective of supplying commodities (goods and services)
	an economic system (Europe in 18th century) to increase a nation's wealth by government regulation of all of the nation's commercial interests