That's certainly not the only or even the most common usage of the word. For example, most educated Catholics don't consider the Anglican church or mainstream

That's certainly not the only or even the most common usage of the word. For example, most educated Catholics don't consider the Anglican church or mainstream Judaism or Islam as cults. On the other hand, many Catholics would consider Jehova's Witness and some pentecostal churches as cults, even though at some level Catholicism's doctrines share more bullet points with these organizations than with Judaism or Islam.