remand vs imprison

remand is a noun but imprison is not a noun.

Word	Noun	Adjective	Verb	Adverb
remand	Yes	No	Yes	No
imprison	No	No	Yes	No

As verbs, remand and imprison are synonyms defined as:

Other synonyms of remand include gaol, immure, incarcerate, jail, jug, lag, put away, put behind bars.

remand (noun)	imprison (noun)
the act of sending an accused person back into custody to await trial (or the continuation of the trial)

remand (verb)	imprison (verb)
refer (a matter or legal case) to another committee or authority or court for decision	lock up or confine, in or as in a jail
lock up or confine, in or as in a jail	confine as if in a prison