Botanical Aspect
In botany, a fruit is the reproductive organ and/or seed bearing part of the plant. Hence, botanically speaking, there is no doubt that the avocado is a fruit and not a vegetable. It belongs to the berry class of fruits. Nevertheless, there are several such true fruits that are used as vegetables in our day-to-day lives such as peas, tomatoes, chillies, peppers, cereal grains, etc.