lemon mint vs monarda

lemon mint and monarda both are nouns.

Word	Noun	Adjective	Verb	Adverb
lemon mint	Yes	No	No	No
monarda	Yes	No	No	No

As nouns, monarda is a hypernym of lemon mint; that is, monarda is a word with a broader meaning than lemon mint:

lemon mint: an annual horsemint of central and western United States and northern Mexico
monarda: any of various aromatic herbs of the genus Monarda

Other hypernyms of lemon mint include wild bergamot.

lemon mint (noun)	monarda (noun)
mint with leaves having perfume like that of the bergamot orange	any of various aromatic herbs of the genus Monarda
an annual horsemint of central and western United States and northern Mexico