pariah vs untouchable

pariah and untouchable both are nouns.

Word	Noun	Adjective	Verb	Adverb
pariah	Yes	No	No	No
untouchable	Yes	Yes	No	No

As nouns, untouchable is a hyponym of pariah; that is, untouchable is a word with a more specific, narrower meaning than pariah:

Other hyponyms of pariah include heretic, misbeliever, religious outcast, leper, Harijan.

pariah (noun)	untouchable (noun)
a person who is rejected (from society or home)	belongs to lowest social and ritual class in India

pariah (adjective)	untouchable (adjective)
	forbidden to the touch
	impossible to assail
	beyond the reach of criticism or attack or impeachment
	not capable of being obtained
	(especially used in traditional Hindu belief of the lowest caste or castes) defiling