somesthesis vs somatic sensory system

somesthesis and somatic sensory system both are nouns.

Word	Noun	Adjective	Verb	Adverb
somesthesis	Yes	No	No	No
somatic sensory system	Yes	No	No	No

As nouns, somesthesis and somatic sensory system are synonyms defined as:

somesthesis and somatic sensory system: the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs

somesthesis (noun)	somatic sensory system (noun)
the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs	the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs