Etymologies are not very in providing a definition of a word because

They are not very helpful because the meanings of words change over time.

This happen due to the combination of slangs and the unique application of the words based on various circumstances.
Due to this nature, the only thing that we can rely on to interpret certain words is the collective understanding that held by the social group when using the words.

So you know what happened and so it doesn’t repeat it’s self