common grape vine vs grapevine

common grape vine and grapevine both are nouns.

Word	Noun	Adjective	Verb	Adverb
common grape vine	Yes	No	No	No
grapevine	Yes	No	No	No

As nouns, grapevine is a hypernym of common grape vine; that is, grapevine is a word with a broader meaning than common grape vine:

common grape vine: common European grape cultivated in many varieties; chief source of Old World wine and table grapes
grapevine: any of numerous woody vines of genus Vitis bearing clusters of edible berries

Other hypernyms of common grape vine include grape, grape vine.

common grape vine (noun)	grapevine (noun)
common European grape cultivated in many varieties; chief source of Old World wine and table grapes	gossip spread by spoken communication
	any of numerous woody vines of genus Vitis bearing clusters of edible berries