WordNet sense 1 (the perception of tactual or proprioceptive or gut sensations):

somaesthesia, somesthesia, somatic sensation

WordNet sense 2 (the faculty of bodily perception; sensory systems associated with the body; includes skin senses and proprioception and the internal organs):

somaesthesis, somesthesis, somataesthesis, somatic sense, somatic sensory system, somatosensory system