silent vs unhearable

silent and unhearable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
silent	No	Yes	No	No
unhearable	No	Yes	No	No

silent (adjective)	unhearable (adjective)
implied by or inferred from actions or statements	impossible to hear; imperceptible by the ear
unable to speak because of hereditary deafness
having a frequency below or above the range of human audibility
marked by absence of sound
failing to speak or communicate etc when expected to
not made to sound
expressed without speech