It hit me the other day that both spanish and english have words for meetings of witches. This wouldn't be weird if maybe latin had a word for it, or indoeuropean, but no. In fact it seems the spanish word comes from Euskera, which is a language isolate
This means that people in both Spain and England (and possibly elsewhere in europe) saw the need to develop a word for this very specific thing... Why? Was it because of the inquisition or something?
You might be interested in this post by u/BRIStoneman on witchcraft and the law in the Middle Ages, which I think helps illustrate how central the concept of witchcraft was to the cultures of Middle Age Europe.