gypsyweed vs Veronica officinalis

gypsyweed and Veronica officinalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
gypsyweed	Yes	No	No	No
Veronica officinalis	Yes	No	No	No

As nouns, gypsyweed and Veronica officinalis are synonyms defined as:

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

Other synonyms of gypsyweed include common speedwell.

gypsyweed (noun)	Veronica officinalis (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