Rodolia cardinalis vs ladybug

Rodolia cardinalis and ladybug both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rodolia cardinalis	Yes	No	No	No
ladybug	Yes	No	No	No

As nouns, ladybug is a hypernym of Rodolia cardinalis; that is, ladybug is a word with a broader meaning than Rodolia cardinalis:

Rodolia cardinalis: native to Australia; introduced elsewhere to control scale insects
ladybug: small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests

Other hypernyms of Rodolia cardinalis include lady beetle, ladybeetle, ladybird, ladybird beetle.

Rodolia cardinalis (noun)	ladybug (noun)
native to Australia; introduced elsewhere to control scale insects	small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests