is a specific kind of: body part.

is a broader term that covers: layer | apodeme | caliculus, calycle, calyculus | tooth | pad | branchial cleft, gill cleft, gill slit | branchial arch, gill arch, gill bar | peristome | syrinx | bulb | carina | cauda | chiasm, chiasma, decussation | cingulum | concha | filament, filum | germ | infundibulum | interstice | landmark | limbus | rib | blade | radicle | plexus, rete | tube, tube-shaped structure | passage, passageway | fundus | funiculus | head | bodily cavity, cavity, cavum | root | capsule | uvea | lens nucleus, nucleus | membranous labyrinth | bony labyrinth, osseous labyrinth | glans | alveolar bed | valve | vascular structure | lacrimal apparatus | cytoskeleton | nucleolar organiser, nucleolar organizer, nucleolus organiser, nucleolus organizer | centromere, kinetochore | aster | neural structure | fold, plica | convolution, gyrus | cartilaginous structure | ball | plate | horny structure, unguis | skeletal structure | costa | head | bridge | rotator cuff | cornu | corona | receptor | zona, zone ... show more.