Ranunculus bulbosus vs goldcup

Ranunculus bulbosus and goldcup both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ranunculus bulbosus	Yes	No	No	No
goldcup	Yes	No	No	No

As nouns, goldcup is a hypernym of Ranunculus bulbosus; that is, goldcup is a word with a broader meaning than Ranunculus bulbosus:

Ranunculus bulbosus: perennial Old World buttercup with golden to sulphur yellow flowers in late spring to early summer; naturalized in North America
goldcup: any of various plants of the genus Ranunculus

Other hypernyms of Ranunculus bulbosus include butter-flower, buttercup, butterflower, crowfoot, kingcup.

Ranunculus bulbosus (noun)	goldcup (noun)
perennial Old World buttercup with golden to sulphur yellow flowers in late spring to early summer; naturalized in North America	any of various plants of the genus Ranunculus