imposition vs tax

imposition and tax both are nouns.

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

imposition (noun)	tax (noun)
the act of imposing something (as a tax or an embargo)	charge against a citizen's person or property or activity for the support of government
an uncalled-for burden

imposition (verb)	tax (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)