Stuck on a Christmas Crossword? Can You Solve this Tricky Clue?

1. Aromatic substances.
2. Commonly used for religious purposes.
3. Derived from plants.
4. Used in perfumes and incense.
5. Burned as a form of spiritual cleansing.
6. Used in ancient embalming practices.
7. Often found in the form of small pellets or tears.
8. Historically traded along the spice routes.