Ceylon cinnamon vs Cinnamomum zeylanicum

Ceylon cinnamon and Cinnamomum zeylanicum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ceylon cinnamon	Yes	No	No	No
Cinnamomum zeylanicum	Yes	No	No	No

As nouns, Ceylon cinnamon and Cinnamomum zeylanicum are synonyms defined as:

Ceylon cinnamon and Cinnamomum zeylanicum: tropical Asian tree with aromatic yellowish-brown bark; source of the spice cinnamon

Other synonyms of Ceylon cinnamon include Ceylon cinnamon tree, cinnamon.

Ceylon cinnamon (noun)	Cinnamomum zeylanicum (noun)
tropical Asian tree with aromatic yellowish-brown bark; source of the spice cinnamon	tropical Asian tree with aromatic yellowish-brown bark; source of the spice cinnamon