Pepper and garlic are two of the most commonly used spices in the world. pepper is a flowering plant in the family Piperaceae, cultivated for its fruit, which is usually dried and used as a spice and seasoning. The fruit of the capsicum plant is used to make a variety of dishes, including chili peppers. garlic is a species in the onion family. Allium sativum, garlic is widely used around the world for its pungent flavor as a seasoning or condiment.