annual vs flora

annual and flora both are nouns.

Word	Noun	Adjective	Verb	Adverb
annual	Yes	Yes	No	No
flora	Yes	No	No	No

As nouns, flora is a hypernym of annual; that is, flora is a word with a broader meaning than annual:

annual: (botany) a plant that completes its entire life cycle within the space of a year
flora: (botany) a living organism lacking the power of locomotion

Other hypernyms of annual include plant, plant life.

annual (noun)	flora (noun)
a reference book that is published regularly once every year	(botany) a living organism lacking the power of locomotion
(botany) a plant that completes its entire life cycle within the space of a year	all the plant life in a particular region or period

annual (adjective)	flora (adjective)
completing its life cycle within a year
occurring or payable every year