guilty conscience vs guilt feelings

guilty conscience and guilt feelings both are nouns.

Word	Noun	Adjective	Verb	Adverb
guilty conscience	Yes	No	No	No
guilt feelings	Yes	No	No	No

As nouns, guilty conscience and guilt feelings are synonyms defined as:

guilty conscience and guilt feelings: remorse caused by feeling responsible for some offense

Other synonyms of guilty conscience include guilt, guilt trip.

guilty conscience (noun)	guilt feelings (noun)
remorse caused by feeling responsible for some offense	remorse caused by feeling responsible for some offense