Nervous system and Peripheral nervous system

Nervous system noun - The sensory and control apparatus consisting of a network of nerve cells.

Peripheral nervous system and nervous system are semantically related. in central nervous system topic. In some cases you can use "Peripheral nervous system" instead a noun phrase "Nervous system".

Peripheral nervous system noun - The section of the nervous system lying outside the brain and spinal cord.

Nervous system and peripheral nervous system are semantically related. Sometimes you can replace phrase "Nervous system" with "Peripheral nervous system", this phrases are similar.