common ginger vs stem ginger

common ginger and stem ginger both are nouns.

Word	Noun	Adjective	Verb	Adverb
common ginger	Yes	No	No	No
stem ginger	Yes	No	No	No

As nouns, common ginger and stem ginger are synonyms defined as:

common ginger and stem ginger: tropical Asian plant widely cultivated for its pungent root; source of gingerroot and powdered ginger

Other synonyms of common ginger include Canton ginger, Zingiber officinale.

common ginger (noun)	stem ginger (noun)
tropical Asian plant widely cultivated for its pungent root; source of gingerroot and powdered ginger	tropical Asian plant widely cultivated for its pungent root; source of gingerroot and powdered ginger