movable barrier vs barrier

movable barrier and barrier both are nouns.

Word	Noun	Adjective	Verb	Adverb
movable barrier	Yes	No	No	No
barrier	Yes	No	No	No

As nouns, barrier is a hypernym of movable barrier; that is, barrier is a word with a broader meaning than movable barrier:

movable barrier (noun)	barrier (noun)
a barrier that can be moved to allow passage	a structure or object that impedes free movement
	any condition that makes it difficult to make progress or to achieve an objective
	anything serving to maintain separation by obstructing vision or access