yellow pitcher plant vs huntsman's horn

yellow pitcher plant and huntsman's horn both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow pitcher plant	Yes	No	No	No
huntsman's horn	Yes	No	No	No

As nouns, yellow pitcher plant and huntsman's horn are synonyms defined as:

yellow pitcher plant and huntsman's horn: pitcher plant of southeastern United States having erect yellow trumpet-shaped pitchers with wide mouths and erect lids

Other synonyms of yellow pitcher plant include huntsman's horns, Sarracenia flava, trumpets, yellow trumpet.

yellow pitcher plant (noun)	huntsman's horn (noun)
pitcher plant of southeastern United States having erect yellow trumpet-shaped pitchers with wide mouths and erect lids	pitcher plant of southeastern United States having erect yellow trumpet-shaped pitchers with wide mouths and erect lids