withholding vs tax

withholding and tax both are nouns.

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

withholding (noun)	tax (noun)
the act of deducting from an employee's salary	charge against a citizen's person or property or activity for the support of government
the act of holding back or keeping within your possession or control
income tax withheld from employees' wages and paid directly to the government by the employer

withholding (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)