Somesthesis and Tactual sensation

Somesthesis noun - The faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs.

Tactual sensation and somesthesis are semantically related. In some cases you can replace phrase "Tactual sensation" with "Somesthesis", this terms are similar.

Tactual sensation noun - The faculty of perceiving (via the skin) pressure or heat or pain.

Somesthesis and tactual sensation are semantically related. You can use "Somesthesis" instead a noun phrase "Tactual sensation".