baby tears vs groundcover

baby tears and groundcover both are nouns.

Word	Noun	Adjective	Verb	Adverb
baby tears	Yes	No	No	No
groundcover	Yes	No	No	No

As nouns, groundcover is a hypernym of baby tears; that is, groundcover 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
groundcover: low-growing plants planted in deep shade or on a steep slope where turf is difficult to grow

Other hypernyms of baby tears include ground cover.

baby tears (noun)	groundcover (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