jack-by-the-hedge vs hedge garlic

jack-by-the-hedge and hedge garlic both are nouns.

Word	Noun	Adjective	Verb	Adverb
jack-by-the-hedge	Yes	No	No	No
hedge garlic	Yes	No	No	No

As nouns, jack-by-the-hedge and hedge garlic are synonyms defined as:

jack-by-the-hedge and hedge garlic: European herb that smells like garlic

Other synonyms of jack-by-the-hedge include Alliaria officinalis, garlic mustard, sauce-alone.

jack-by-the-hedge (noun)	hedge garlic (noun)
European herb that smells like garlic	European herb that smells like garlic