vanilla bean vs vanillin

vanilla bean and vanillin both are nouns.

Word	Noun	Adjective	Verb	Adverb
vanilla bean	Yes	No	No	No
vanillin	Yes	No	No	No

vanilla bean (noun)	vanillin (noun)
long bean-like fruit; seeds are used as flavoring	a crystalline compound found in vanilla beans and some balsam resins; used in perfumes and flavorings