What is the classification of conjunctions and connectors?

I learned that the "transition and connectors" are not the same as the conjunctions, as far as I know, the conjunctions are divided into two major types, coordinators and subordinators, but then there are other kinds of linking words, "transitions and connectors" which can be showing; connectors (connection, result), contrast, emphasis, addition, time showing chronology, time, comment.

I got that from here and I can’t make sense of it because, in the Cambridge dictionary, they say that conjunctions are linking words, but I understand linking words like transition and connector words, are all the "transition and connectors" subordinators conjunctions?

I’m not making a clear question, I’m asking if someone can explain the difference and classification of these words; linking words, conjunctions, connectors and transition words, coordinators and subordinators conjunctions.