ground cover vs flora

ground cover and flora both are nouns.

Word	Noun	Adjective	Verb	Adverb
ground cover	Yes	No	No	No
flora	Yes	No	No	No

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

ground cover: low-growing plants planted in deep shade or on a steep slope where turf is difficult to grow
flora: all the plant life in a particular region or period

Other hypernyms of ground cover include botany, vegetation.

ground cover (noun)	flora (noun)
small plants other than saplings growing on a forest floor	(botany) a living organism lacking the power of locomotion
low-growing plants planted in deep shade or on a steep slope where turf is difficult to grow	all the plant life in a particular region or period