Ipomoea leptophylla vs man-of-the-earth

Ipomoea leptophylla and man-of-the-earth both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ipomoea leptophylla	Yes	No	No	No
man-of-the-earth	Yes	No	No	No

As nouns, Ipomoea leptophylla and man-of-the-earth are synonyms defined as:

Ipomoea leptophylla and man-of-the-earth: a morning glory with long roots of western United States

Ipomoea leptophylla (noun)	man-of-the-earth (noun)
a morning glory with long roots of western United States	tropical American prostrate or climbing herbaceous perennial having an enormous starchy root; sometimes held to be source of the sweet potato
	a morning glory with long roots of western United States