is a specific kind of: anatomical structure, bodily structure, body structure, complex body part, structure.

is a broader term that covers: corpus mamillare, mamillary body, mammillary body | ganglion | reflex arc | center, centre, nerve center, nerve centre | cerebral hemisphere, hemisphere | piriform area, piriform lobe, pyriform area, pyriform lobe | olfactory bulb | brain, encephalon | neencephalon, neoencephalon | palaeencephalon, paleencephalon, paleoencephalon | cerebellum | cerebellar hemisphere | vermis, vermis cerebelli | paleocerebellum | cerebral cortex, cerebral mantle, cortex, pallium | geniculate body | cerebrum | bulb, medulla, medulla oblongata | forebrain, prosencephalon | hippocampus | cingulate gyrus, gyrus cinguli | telencephalon | betweenbrain, diencephalon, interbrain, thalmencephalon | limbic brain, limbic system, visceral brain | subthalamus | thalamus | hypothalamus | mesencephalon, midbrain | locus niger, nucleus niger, substantia nigra | hindbrain, rhombencephalon | myelencephalon | pons, pons Varolii | brain-stem, brain stem, brainstem | nucleus | radiation | medulla spinalis, spinal cord | ANS, autonomic nervous system ... show more.