Berry: A simple fleshy fruit that develops from a single ovary. It has one or more seeds, and the entire ovary wall ripens into the fleshy edible portion. Guava is a classic example of a berry. Other examples include tomatoes and grapes.
Cypsela: A type of dry, indehiscent fruit where the ovary wall is fused with the seed coat. It is characteristic of the family Asteraceae, which includes the sunflower. What we commonly think of as a sunflower "seed" is actually a cypsela.
Regma: A type of dry, schizocarpic fruit that splits into three or more single-seeded parts (called cocci) at maturity. It's a key feature of the castor bean plant, Ricinus communis.
Syconium: A type of multiple or composite fruit that develops from a fleshy, hollow receptacle. The tiny flowers are located on the inner surface of the receptacle. The most well-known example is the fig, which is a species of Ficus.