endive vs Cichorium endivia

endive and Cichorium endivia both are nouns.

Word	Noun	Adjective	Verb	Adverb
endive	Yes	No	No	No
Cichorium endivia	Yes	No	No	No

As nouns, endive and Cichorium endivia are synonyms defined as:

endive and Cichorium endivia: widely cultivated herb with leaves valued as salad green; either curly serrated leaves or broad flat ones that are usually blanched

Other synonyms of endive include witloof.

endive (noun)	Cichorium endivia (noun)
variety of endive having leaves with irregular frilled edges	widely cultivated herb with leaves valued as salad green; either curly serrated leaves or broad flat ones that are usually blanched
widely cultivated herb with leaves valued as salad green; either curly serrated leaves or broad flat ones that are usually blanched