attach vs impound

attach and impound both are verbs.

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

As verbs, attach and impound are synonyms defined as:

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

Other synonyms of attach include confiscate, seize, sequester.

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