wild garlic vs stag's garlic

wild garlic and stag's garlic both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild garlic	Yes	No	No	No
stag's garlic	Yes	No	No	No

As nouns, wild garlic and stag's garlic are synonyms defined as:

Other synonyms of wild garlic include Allium vineale, crow garlic, false garlic, field garlic.

wild garlic (noun)	stag's garlic (noun)
pungent Old World weedy plant	pungent Old World wild onion
pungent Old World wild onion