botany vs groundcover

botany and groundcover both are nouns.

Word	Noun	Adjective	Verb	Adverb
botany	Yes	No	No	No
groundcover	Yes	No	No	No

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

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

botany (noun)	groundcover (noun)
the branch of biology that studies plants	small plants other than saplings growing on a forest floor
all the plant life in a particular region or period	low-growing plants planted in deep shade or on a steep slope where turf is difficult to grow