somatic sensory system vs somataesthesis

somatic sensory system and somataesthesis both are nouns.

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

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

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

somatic sensory system (noun)	somataesthesis (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