browallia vs flower

browallia and flower both are nouns.

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

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

browallia: any of several herbs of the genus Browallia cultivated for their blue or violet or white flowers
flower: a plant cultivated for its blooms or blossoms

browallia (noun)	flower (noun)
any of several herbs of the genus Browallia cultivated for their blue or violet or white flowers	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

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