impound vs attach

impound and attach both are verbs.

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

As verbs, impound and attach are synonyms defined as:

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

Other synonyms of impound include confiscate, seize, sequester.

impound (verb)	attach (verb)
place or shut up in a pound	become attached
take temporary possession of as a security, by legal authority	cause to be attached
	be attached; be in contact with
	take temporary possession of as a security, by legal authority
	create social or emotional ties