guilty conscience vs guilt trip

guilty conscience and guilt trip both are nouns.

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

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

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

Other synonyms of guilty conscience include guilt, guilt feelings.

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