huntsman's horn vs yellow pitcher plant

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

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

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

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

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

huntsman's horn (noun)	yellow pitcher plant (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