remand vs detain

remand is a noun but detain is not a noun.

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

As verbs, detain is a hypernym of remand; that is, detain is a word with a broader meaning than remand:

Other hypernyms of remand include confine.

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

remand (verb)	detain (verb)
refer (a matter or legal case) to another committee or authority or court for decision	cause to be slowed down or delayed
lock up or confine, in or as in a jail	stop or halt
	deprive of freedom; take into confinement