Veronica officinalis vs common speedwell

Veronica officinalis and common speedwell both are nouns.

Word	Noun	Adjective	Verb	Adverb
Veronica officinalis	Yes	No	No	No
common speedwell	Yes	No	No	No

As nouns, Veronica officinalis and common speedwell are synonyms defined as:

Veronica officinalis and common speedwell: common hairy European perennial with pale blue or lilac flowers in axillary racemes

Other synonyms of Veronica officinalis include gypsyweed.

Veronica officinalis (noun)	common speedwell (noun)
common hairy European perennial with pale blue or lilac flowers in axillary racemes	common hairy European perennial with pale blue or lilac flowers in axillary racemes