Grease may refer to:
- Grease (lubricant), a type of industrial lubricant
- Yellow grease, in rendering, used frying oils, or lower-quality grades of tallow
- Brown grease, waste vegetable oil, animal fat, grease, etc. that is recovered from a grease trap
- Any petroleum product or fat (including those used in cooking) that is a soft solid at room temperature
- Hydrogenated vegetable oil (vegetable shortening) used as a replacement for lard and other rendered animal fats
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