Polygala paucifolia vs milkwort

Polygala paucifolia and milkwort both are nouns.

Word	Noun	Adjective	Verb	Adverb
Polygala paucifolia	Yes	No	No	No
milkwort	Yes	No	No	No

As nouns, milkwort is a hypernym of Polygala paucifolia; that is, milkwort is a word with a broader meaning than Polygala paucifolia:

Polygala paucifolia: common trailing perennial milkwort of eastern North America having leaves like wintergreen and usually rosy-purple flowers with winged sepals
milkwort: any of various plants of the genus Polygala

Polygala paucifolia (noun)	milkwort (noun)
common trailing perennial milkwort of eastern North America having leaves like wintergreen and usually rosy-purple flowers with winged sepals	any of various plants of the genus Polygala