What's the difference between castoreum and castorin?
Castoreum
Definition:
(n.) A peculiar bitter orange-brown substance, with strong, penetrating odor, found in two sacs between the anus and external genitals of the beaver; castor; -- used in medicine as an antispasmodic, and by perfumers.
Example Sentences:
(1) It's amazing what I can absorb in a 10-hour driving shift, and the show that included castoreum (Google it!)
Castorin
Definition:
(n.) A white crystalline substance obtained from castoreum.