Halva refers to various local confection recipes. The name is used for referring to a huge variety of confections, with the most geographically common variety based on toasted semolina.
Tahini or tahina is a Middle Eastern condiment made from toasted ground hulled sesame. It is served by itself or as a major ingredient in hummus, baba ghanoush, and halva. Tahini is used in the cuisines of the Levant and Eastern Mediterranean, the South Caucasus, as well as parts of North Africa.