Nouns

(n)groom, bridegrooma man participant in his own marriage ceremony
(n)groom, hostler, ostlersomeone employed in a stable to take care of the horses
(n)groom, bridegrooma man who has recently been married

Verbs

(v)prepare, groom, traineducate for a future role or function“He is grooming his son to become his successor”, “The prince was prepared to become King one day”, “They trained him to be a warrior”
(v)dress, groom, currygive a neat appearance to“groom the dogs”, “dress the horses”
(v)groom, neatencare for one's external appearance“He is always well-groomed”