chrysomelid vs leaf beetle

chrysomelid and leaf beetle both are nouns.

Word	Noun	Adjective	Verb	Adverb
chrysomelid	Yes	No	No	No
leaf beetle	Yes	No	No	No

As nouns, chrysomelid and leaf beetle are synonyms defined as:

chrysomelid and leaf beetle: brightly colored beetle that feeds on plant leaves; larvae infest roots and stems

chrysomelid (noun)	leaf beetle (noun)
brightly colored beetle that feeds on plant leaves; larvae infest roots and stems	brightly colored beetle that feeds on plant leaves; larvae infest roots and stems