flora vs microflora

flora and microflora both are nouns.

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

As nouns, microflora is a hyponym of flora; that is, microflora is a word with a more specific, narrower meaning than flora:

flora: (botany) a living organism lacking the power of locomotion
microflora: microscopic plants; bacteria are often considered to be microflora

flora (noun)	microflora (noun)
(botany) a living organism lacking the power of locomotion	microscopic plants; bacteria are often considered to be microflora
all the plant life in a particular region or period