Nouns

(n)awareness, sentiencestate of elementary or undifferentiated consciousness“the crash intruded on his awareness”
(n)sense, sensation, sentience, sentiency, sensory facultythe faculty through which the external world is apprehended“in the dark he had to depend on touch and on his senses of smell and hearing”
(n)sentiencethe readiness to perceive sensations; elementary or undifferentiated consciousness“gave sentience to slugs and newts” (Richard Eberhart)