luxuriance vs copiousness

luxuriance and copiousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
luxuriance	Yes	No	No	No
copiousness	Yes	No	No	No

As nouns, copiousness is a hypernym of luxuriance; that is, copiousness is a word with a broader meaning than luxuriance:

luxuriance: the property of being lush and abundant and a pleasure to the senses
copiousness: the property of a more than adequate quantity or supply

Other hypernyms of luxuriance include abundance, teemingness.

luxuriance (noun)	copiousness (noun)
the property of being lush and abundant and a pleasure to the senses	the property of a more than adequate quantity or supply