baby tears vs ground cover

baby tears and ground cover both are nouns.

Word	Noun	Adjective	Verb	Adverb
baby tears	Yes	No	No	No
ground cover	Yes	No	No	No

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

baby tears: prostrate or creeping Corsican herb with moss-like small round short-stemmed leaves
ground cover: low-growing plants planted in deep shade or on a steep slope where turf is difficult to grow

Other hypernyms of baby tears include groundcover.

baby tears (noun)	ground cover (noun)
prostrate or creeping Corsican herb with moss-like small round short-stemmed leaves	small plants other than saplings growing on a forest floor
	low-growing plants planted in deep shade or on a steep slope where turf is difficult to grow