protective cover vs watch glass

Other hyponyms of protective cover include armor, armour, bell glass, bell jar, binder, ring-binder, back, binding, book binding, cover, blind, screen, armguard, bracer, cap, cloche, coaster, cold frame, crystal, watch crystal, dust cover, faceplate, cladding, facing, fall-board, fallboard, escutcheon, finger plate, scutcheon, heat shield, bonnet, cowl, cowling, hood, housing, lamp shade, lampshade, shade, liner, lining, mask, mulch, roof, roof, screen, shade, sheath, overlay, overlayer, sheathing, shelter, shield, dashboard, splashboard, splasher, splasher, testudo, thumbstall, toecap, splashboard, washboard.