veronica vs flower

veronica and flower both are nouns.

Word	Noun	Adjective	Verb	Adverb
veronica	Yes	No	No	No
flower	Yes	No	Yes	No

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

veronica (noun)	flower (noun)
any plant of the genus Veronica	a plant cultivated for its blooms or blossoms
	reproductive organ of angiosperm plants especially one having showy or colorful parts
	the period of greatest prosperity or productivity

veronica (verb)	flower (verb)
	produce or yield flowers