Boy Scouts vs social movement

Boy Scouts and social movement both are nouns.

Word	Noun	Adjective	Verb	Adverb
Boy Scouts	Yes	No	No	No
social movement	Yes	No	No	No

As nouns, social movement is a hypernym of Boy Scouts; that is, social movement is a word with a broader meaning than Boy Scouts:

Boy Scouts: an international (but decentralized) movement started in 1908 in England with the goal of teaching good citizenship to boys
social movement: a group of people with a common ideology who try together to achieve certain general goals

Other hypernyms of Boy Scouts include front, movement.

Boy Scouts (noun)	social movement (noun)
an international (but decentralized) movement started in 1908 in England with the goal of teaching good citizenship to boys	a group of people with a common ideology who try together to achieve certain general goals