horrible vs atrocious

horrible and atrocious both are adjectives.

Word	Noun	Adjective	Verb	Adverb
horrible	No	Yes	No	No
atrocious	No	Yes	No	No

As adjectives, horrible and atrocious are synonyms defined as:

Other synonyms of horrible include frightful, horrifying, ugly.

horrible (adjective)	atrocious (adjective)
provoking horror	provoking horror
	exceptionally bad or displeasing
	shockingly brutal or cruel