Categories that classify REITs based on the property types they own or operate. The 14 sectors recognized by the FTSE Nareit indexes are: data centers, diversified, gaming, health care, industrial, lodging/resorts, mortgage, office, residential, retail, self-storage, specialty, telecommunications, and timberland. Each sector reflects different economic drivers and risk profiles. Understanding these sectors helps investors diversify and align real estate exposure with market trends and investment goals.