Scent can change the feeling of a room very quickly. A small amount of smoke, a candle, a diffuser, or a room spray can make a space feel warmer, cleaner, softer, or more settled. But not all scent is created in the same way.
When people talk about natural incense, they are usually referring to incense made from plant-based materials such as woods, herbs, roots, leaves, resins, and natural binders. Synthetic fragrance oils, on the other hand, are created through formulated aroma compounds. They can be designed to smell like almost anything: sandalwood, lavender, rain, linen, vanilla, smoke, or a flower that does not exist in nature.
Both can create scent. The difference is in how they are made, how they smell, and how they behave in a room.