Essential oil and Spirit of turpentine

Essential oil noun - An oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings.

Spirit of turpentine and essential oil are semantically related. In some cases you can replace phrase "Spirit of turpentine" with "Essential oil", this phrases are similar.

Spirit of turpentine noun - Volatile liquid distilled from turpentine oleoresin; used as paint thinner and solvent and medicinally.

Essential oil and spirit of turpentine are semantically related. You can use "Essential oil" instead a noun phrase "Spirit of turpentine".