cryptogam vs flora

cryptogam and flora both are nouns.

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

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

cryptogam: formerly recognized taxonomic group including all flowerless and seedless plants that reproduce by means of spores: ferns, mosses, algae, fungi
flora: (botany) a living organism lacking the power of locomotion

Other hypernyms of cryptogam include plant, plant life.

cryptogam (noun)	flora (noun)
formerly recognized taxonomic group including all flowerless and seedless plants that reproduce by means of spores: ferns, mosses, algae, fungi	(botany) a living organism lacking the power of locomotion
	all the plant life in a particular region or period