autotroph vs flora

autotroph and flora both are nouns.

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

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

autotroph: plant capable of synthesizing its own food from simple organic substances
flora: (botany) a living organism lacking the power of locomotion

Other hypernyms of autotroph include plant, plant life.

autotroph (noun)	flora (noun)
plant capable of synthesizing its own food from simple organic substances	(botany) a living organism lacking the power of locomotion
	all the plant life in a particular region or period