common juniper vs juniper berries

common juniper and juniper berries both are nouns.

Word	Noun	Adjective	Verb	Adverb
common juniper	Yes	No	No	No
juniper berries	Yes	No	No	No

common juniper (noun)	juniper berries (noun)
densely branching shrub or small tree having pungent blue berries used to flavor gin; widespread in Northern Hemisphere; only conifer on coasts of Iceland and Greenland	berrylike cone of a common juniper; used in making gin