EN
While at first glance the difference between fruit and vegetables appears to be clear, there are some problematic cases. One of them is the tomato, which is commonly regarded as a vegetable, although – technically speaking – it is a fruit. The aim of the present paper is to explain the controversies concerning the classification of tomatoes and other similar examples. In particular, the prototype-based approach to categorisation appears to offer a better chance of revealing the mechanisms that stand behind the issue of categorisation, than the classical approach.