Flavor is a kind of artificially formulated mixture containing two or more or even dozens of spices (sometimes with suitable solvents or carriers) and a certain aroma.
In order to have a specific aroma or fragrance, it must go through the process of fragrance adjustment. Fragrance is the process of blending several or even dozens of spices according to a certain ratio into a blended spice with a certain aroma or flavor and a certain purpose, and this blended spice is called a flavor.