There is a reason the spice trade is what stimulated much of the commerce during Europe’s age of world discovery. Life becomes more interesting when we draw upon more of Nature’s many principles that plants put into the flavors of a spice.
Along those lines, it’s worth considering how spices serve as a first level to our use of herbs. It’s because spices are filled with molecules that have health-strengthening properties. Some of them will kill parasites within your gut, others will help you digest food, or stimulate your peristalsis; others are good against inflammations present in your body, some will help to stabilize your blood sugar, protect your brain, and give you energy.
Each spice’s gustatory flavors as well as its body-affecting properties are what the old herbalists would call its array of herbal principles.