Lubricant and lubrication composition

A lubricant comprising molybdenum sulfide particles, wherein

• the molybdenum sulfide particles contain molybdenum disulfide having a 2H crystal structure and a 3R crystal structure,
• the molybdenum sulfide particles have a specific surface area of 10 m2/g or more, the specific surface area being measured by a BET method, and
• in a spectrum of the molybdenum sulfide particles obtained from powder X-ray diffraction (XRD) using Cu-Kα rays as an X-ray source, both a peak in a vicinity of 39.5° and a peak in a vicinity of 49.5° include a synthetic peak of the 2H crystal structure and the 3R crystal structure, and a half width of the peak in the vicinity of 39.5° and a half width of the peak in the vicinity of 49.5° is 1° or more.