retaliatory tariff vs duty

retaliatory tariff and duty both are nouns.

Word	Noun	Adjective	Verb	Adverb
retaliatory tariff	Yes	No	No	No
duty	Yes	No	No	No

As nouns, duty is a hypernym of retaliatory tariff; that is, duty is a word with a broader meaning than retaliatory tariff:

retaliatory tariff: tariff imposed on a foreign commercial entity as a form of reprisal.
duty: a government tax on imports or exports

Other hypernyms of retaliatory tariff include tariff.

retaliatory tariff (noun)	duty (noun)
tariff imposed on a foreign commercial entity as a form of reprisal.	the social force that binds you to the courses of action demanded by that force
	work that you are obliged to perform for moral or legal reasons
	a government tax on imports or exports