Meaning : A unit of instruction.
Example :
He took driving lessons.
Meaning : Punishment intended as a warning to others.
Example :
They decided to make an example of him.
Synonyms : deterrent example, example, object lesson
Meaning : The significance of a story or event.
Example :
The moral of the story is to love thy neighbor.
Synonyms : moral
Meaning : A task assigned for individual study.
Example :
He did the lesson for today.