ladybeetle vs lady beetle

ladybeetle and lady beetle both are nouns.

Word	Noun	Adjective	Verb	Adverb
ladybeetle	Yes	No	No	No
lady beetle	Yes	No	No	No

As nouns, ladybeetle and lady beetle are synonyms defined as:

ladybeetle and lady beetle: small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests

Other synonyms of ladybeetle include ladybird, ladybird beetle, ladybug.

ladybeetle (noun)	lady beetle (noun)
small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests	small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests