what is the difference between fruit and vrucht?
An apple is "fruit". "fruit" is a word for all edible "vruchten" because there are also "vruchten" which contain poison.
Fruit refers to food, whereas vrucht is more of a botanical term (although still commonly used).
In a similar way, would we say that a tomato/eggplant/cucumber/etc is a "vrucht" but not a "fruit"?