unhearing vs profoundly deaf

unhearing and profoundly deaf both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unhearing	No	Yes	No	No
profoundly deaf	No	Yes	No	No

As adjectives, unhearing and profoundly deaf are synonyms defined as:

Other synonyms of unhearing include deaf as a post, stone-deaf.

unhearing (adjective)	profoundly deaf (adjective)
totally deaf; unable to hear anything	totally deaf; unable to hear anything