golf lesson vs lesson

golf lesson and lesson both are nouns.

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

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

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