Veronica chamaedrys vs veronica

Veronica chamaedrys and veronica both are nouns.

Word	Noun	Adjective	Verb	Adverb
Veronica chamaedrys	Yes	No	No	No
veronica	Yes	No	No	No

As nouns, veronica is a hypernym of Veronica chamaedrys; that is, veronica is a word with a broader meaning than Veronica chamaedrys:

Veronica chamaedrys: Old World plant with axillary racemes of blue-and-white flowers
veronica: any plant of the genus Veronica

Other hypernyms of Veronica chamaedrys include speedwell.

Veronica chamaedrys (noun)	veronica (noun)
Old World plant with axillary racemes of blue-and-white flowers	any plant of the genus Veronica