framework vs undercarriage

Other hyponyms of framework include airframe, arbor, arbour, bower, pergola, bustle, case, casing, chase, climbing frame, clotheshorse, coaming, cornice, pelmet, valance, valance board, deckle, derrick, doorcase, doorframe, buffer, cowcatcher, fender, pilot, frame, framing, frame, gantry, gauntry, grate, grating, grill, grille, grillwork, gun carriage, handbarrow, hayrack, hayrig, honeycomb, fretwork, lattice, latticework, mounting, oxbow, picture frame, ribbing, sash, window sash, buck, horse, sawbuck, sawhorse, stocks, stocks, stretcher, embroidery frame, embroidery hoop, tambour, tenter, truss, baby-walker, go-cart, walker, walker, Zimmer, Zimmer frame, wattle, window, window frame, climbing iron.