Which term refers to a space of ground for burial?

The term that refers to a space of ground for burial is "grave." A grave is specifically designated for the interment of human remains and is usually marked with a headstone or similar memorial. It is a defined area in the ground that provides a resting place for an individual, distinguishing it from other terms that may relate to burial but denote different concepts.

A burial site is a broader term that can refer to various locations where bodies are interred, which may include graves, but does not specifically define a single location like a grave does. A niche typically refers to a space designed for inurnment of cremated remains, often found in columbariums, rather than for traditional burial. A cemetery is a larger area that encompasses multiple graves and burial sites, providing a designated space for the burial of the deceased, making it a communal area rather than a specific burial spot. Thus, "grave" is the most accurate term for a specifically designated space of ground for burial.