what is the difference between extract and oil
Extract. An extract is a mixture of an essential oil and a medium--usually alcohol--that helps carry the flavor. You can make peppermint oil either by soaking peppermint leaves and stems in alcohol and allowing the alcohol to absorb oil--extracting the flavor from the plant--or by diluting peppermint oil with alcohol.
The generic term oil can refer to two distinct herbal preparations. In one type, herbs are extracted with a fixed oil, usually vegetable oil, to make infused herbal oil intended primarily for use on the skin. The other products, essential oils, are phytochemical constituent groups isolated from aromatic herbs.