Anagallis tenella vs pimpernel

Anagallis tenella and pimpernel both are nouns.

Word	Noun	Adjective	Verb	Adverb
Anagallis tenella	Yes	No	No	No
pimpernel	Yes	No	No	No

As nouns, pimpernel is a hypernym of Anagallis tenella; that is, pimpernel is a word with a broader meaning than Anagallis tenella:

Anagallis tenella: small creeping European herb having delicate pink flowers
pimpernel: any of several plants of the genus Anagallis

Anagallis tenella (noun)	pimpernel (noun)
small creeping European herb having delicate pink flowers	any of several plants of the genus Anagallis
	European garden herb with purple-tinged flowers and leaves that are sometimes used for salads