horror vs repugnance

horror and repugnance both are nouns.

Word	Noun	Adjective	Verb	Adverb
horror	Yes	No	No	No
repugnance	Yes	No	No	No

As nouns, horror and repugnance are synonyms defined as:

Other synonyms of horror include repulsion, revulsion.

horror (noun)	repugnance (noun)
something that inspires horror; something horrible	intense aversion
intense aversion	the relation between propositions that cannot both be true at the same time
intense and profound fear