sentience vs consciousness

sentience and consciousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sentience	Yes	No	No	No
consciousness	Yes	No	No	No

As nouns, consciousness is a hypernym of sentience; that is, consciousness is a word with a broader meaning than sentience:

sentience: state of elementary or undifferentiated consciousness
consciousness: an alert cognitive state in which you are aware of yourself and your situation

sentience (noun)	consciousness (noun)
the readiness to perceive sensations; elementary or undifferentiated consciousness	an alert cognitive state in which you are aware of yourself and your situation
the faculty through which the external world is apprehended	having knowledge of
state of elementary or undifferentiated consciousness