body part vs complex body part

Other hyponyms of body part include saddle, underpart, horseback, dock, ambulacrum, withers, cannon, shank, loin, lumbus, croup, croupe, hindquarters, rump, gaskin, flank, thorax, apparatus, adnexa, annexa, area, region, dilator, groove, vallecula, partition, external body part, anatomical structure, bodily structure, body structure, structure, fornix, system, ampulla, tissue, mentum, organ, venter, energid, protoplast, appendage, outgrowth, process, lobe, rectum, shoulder, body, torso, trunk, chest, pectus, thorax, thorax, hip, haunch, abdomen, belly, stomach, venter, dorsum, back, dorsum, small, arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush, buttock, cheek, stump, shank, shin, toe, articulatio, articulation, joint, loins, feature, lineament, rudiment.