Glechoma vs gill-over-the-ground

Glechoma and gill-over-the-ground both are nouns.

Word	Noun	Adjective	Verb	Adverb
Glechoma	Yes	No	No	No
gill-over-the-ground	Yes	No	No	No

Glechoma (noun)	gill-over-the-ground (noun)
ground ivy	trailing European aromatic plant of the mint family having rounded leaves and small purplish flowers often grown in hanging baskets; naturalized in North America; sometimes placed in genus Nepeta