conscience vs ethics

conscience and ethics both are nouns.

Word	Noun	Adjective	Verb	Adverb
conscience	Yes	No	No	No
ethics	Yes	No	No	No

As nouns, ethics is a hypernym of conscience; that is, ethics is a word with a broader meaning than conscience:

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

Other hypernyms of conscience include ethical motive, morality, morals.

conscience (noun)	ethics (noun)
conformity to one's own sense of right conduct	the philosophical study of moral values and rules
a feeling of shame when you do something immoral	motivation based on ideas of right and wrong
motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions