sense of right and wrong vs scruples

sense of right and wrong and scruples both are nouns.

Word	Noun	Adjective	Verb	Adverb
sense of right and wrong	Yes	No	No	No
scruples	Yes	No	No	No

As nouns, sense of right and wrong and scruples are synonyms defined as:

sense of right and wrong and scruples: motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions

Other synonyms of sense of right and wrong include conscience, moral sense.

sense of right and wrong (noun)	scruples (noun)
motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions	motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions