A green fruit can be synonymous with many things. Some fruits such as apples, pears and grapes have a green variety that is commonly seen in grocery stores. These fruits are often tart and crisp, giving them a unique taste and texture that is different from their ripe counterparts. Other fruits such as kiwi, lime and avocado are green when ripe, making them a great source of nutrients. Additionally, there are lesser-known fruits like starfruit and tomatillos, which are also green when unripe. Overall, the term "green fruit" can refer to a variety of fruits that are delicious, nutritious and worth exploring.