#lesson  a unit of instruction; "he took driving lessons"
  supertype:  pedagogy__teaching__instruction  the profession of a teacher; "he prepared for teaching while still in college"; "pedagogy is recognized as an important profession"
  subtype:  language_lesson  dance_lesson  music_lesson  tennis_lesson  golf_lesson
  part of:  course__course_of_instruction__course_of_study__class__clas  education imparted in a series of lessons or class meetings; "he took a course in basket weaving"; "flirting is not unknown in college classes"

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