moral sense vs ethical motive

moral sense and ethical motive both are nouns.

Word	Noun	Adjective	Verb	Adverb
moral sense	Yes	No	No	No
ethical motive	Yes	No	No	No

As nouns, ethical motive is a hypernym of moral sense; that is, ethical motive is a word with a broader meaning than moral sense:

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

Other hypernyms of moral sense include ethics, morality, morals.

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