lip reader vs deaf person

lip reader and deaf person both are nouns.

Word	Noun	Adjective	Verb	Adverb
lip reader	Yes	No	No	No
deaf person	Yes	No	No	No

As nouns, deaf person is a hypernym of lip reader; that is, deaf person is a word with a broader meaning than lip reader:

lip reader: someone who can understand spoken words by watching the movements of a speaker's lips
deaf person: a person with a severe auditory impairment

lip reader (noun)	deaf person (noun)
someone who can understand spoken words by watching the movements of a speaker's lips	a person with a severe auditory impairment