Is Oregano a spice or herb?

Here's why:

* Herb: Oregano is the dried leaves of the *Origanum vulgare* plant. This makes it technically an herb, as herbs are the leaves, stems, or flowers of plants used for flavoring or medicinal purposes.

* Spice: When these leaves are dried and used in cooking, they become a spice. Spices are generally derived from the seeds, fruits, roots, bark, or other parts of plants.

So, oregano can be considered both an herb and a spice depending on how it's used and its stage of processing.