tax advantage vs advantage

tax advantage and advantage both are nouns.

Word	Noun	Adjective	Verb	Adverb
tax advantage	Yes	No	No	No
advantage	Yes	No	Yes	No

As nouns, advantage is a hypernym of tax advantage; that is, advantage is a word with a broader meaning than tax advantage:

tax advantage: an advantage bestowed by legislation that reduces a tax on some preferred activity
advantage: the quality of having a superior or more favorable position

Other hypernyms of tax advantage include vantage.

tax advantage (noun)	advantage (noun)
an advantage bestowed by legislation that reduces a tax on some preferred activity	the quality of having a superior or more favorable position
	benefit resulting from some event or action
	(tennis) first point scored after deuce

tax advantage (verb)	advantage (verb)
	give an advantage to