What ARE Spices? (Seasonings, herbs, spices - what’s the difference?)

What is the difference between seasoning, spices and herbs? Is salt a spice? In addition to flavoring food, what are spices good for? What parts of which plants are spices? And where in the world are the spices being consumed and produced the most? This video is an introduction to the vast world of spices, and an invitation to look at spices with curious minds of an explorer.