modality vs sentience

modality and sentience both are nouns.

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

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

Other hypernyms of modality include sensation, sense, sensory faculty, sentiency.

modality (noun)	sentience (noun)
a method of therapy that involves physical or electrical therapeutic treatment	the readiness to perceive sensations; elementary or undifferentiated consciousness
a particular sense	the faculty through which the external world is apprehended
a classification of propositions on the basis of whether they claim necessity or possibility or impossibility	state of elementary or undifferentiated consciousness
verb inflections that express how the action or state is conceived by the speaker