lesson vs pedagogy

lesson and pedagogy both are nouns.

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

As nouns, pedagogy is a hypernym of lesson; that is, pedagogy is a word with a broader meaning than lesson:

Other hypernyms of lesson include instruction, teaching.

lesson (noun)	pedagogy (noun)
a task assigned for individual study	the profession of a teacher
a unit of instruction	the activities of educating or instructing; activities that impart knowledge or skill
punishment intended as a warning to others	the principles and methods of instruction
the significance of a story or event