tax vs revenue enhancement

tax and revenue enhancement both are nouns.

Word	Noun	Adjective	Verb	Adverb
tax	Yes	No	Yes	No
revenue enhancement	Yes	No	No	No

As nouns, tax and revenue enhancement are synonyms defined as:

tax and revenue enhancement: charge against a citizen's person or property or activity for the support of government

Other synonyms of tax include taxation.

tax (noun)	revenue enhancement (noun)
charge against a citizen's person or property or activity for the support of government	charge against a citizen's person or property or activity for the support of government

tax (verb)	revenue enhancement (verb)
make a charge against or accuse
use to the limit
levy a tax on
set or determine the amount of (a payment such as a fine)