Bedplate :: Bedplate (n.) The foundation framing or piece, by which the other parts are supported and held in place; the bed; -- called also baseplate and soleplate..
Bedpost :: Bedpost (n.) One of the four standards that support a bedstead or the canopy over a bedstead.
Bedpost :: Bedpost (n.) Anciently, a post or pin on each side of the bed to keep the clothes from falling off. See Bedstaff..