moral vs lesson

moral and lesson both are nouns.

Word	Noun	Adjective	Verb	Adverb
moral	Yes	Yes	No	No
lesson	Yes	No	No	No

As nouns, moral and lesson are synonyms defined as:

moral (noun)	lesson (noun)
the significance of a story or event	a task assigned for individual study
	a unit of instruction
	punishment intended as a warning to others
	the significance of a story or event

moral (adjective)	lesson (adjective)
concerned with principles of right and wrong or conforming to standards of behavior and character based on those principles
psychological rather than physical or tangible in effect