impound vs confiscate

impound is not an adjective while confiscate is an adjective.

Word	Noun	Adjective	Verb	Adverb
impound	No	No	Yes	No
confiscate	No	Yes	Yes	No

As verbs, impound and confiscate are synonyms defined as:

impound and confiscate: take temporary possession of as a security, by legal authority

Other synonyms of impound include attach, seize, sequester.

impound (adjective)	confiscate (adjective)
	surrendered as a penalty

impound (verb)	confiscate (verb)
place or shut up in a pound	take temporary possession of as a security, by legal authority
take temporary possession of as a security, by legal authority