Lithospermum officinale vs gromwell

Lithospermum officinale and gromwell both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lithospermum officinale	Yes	No	No	No
gromwell	Yes	No	No	No

As nouns, Lithospermum officinale and gromwell are synonyms defined as:

Lithospermum officinale and gromwell: European perennial branching plant; occurs in hedgerows and at the edge of woodlands

Lithospermum officinale (noun)	gromwell (noun)
European perennial branching plant; occurs in hedgerows and at the edge of woodlands	European perennial branching plant; occurs in hedgerows and at the edge of woodlands