Yesterday I read a piece by an analyst in which this analyst claimed that there is no such thing as a primary trend. I read the piece carefully, and my conclusion was that this analyst didn't know what he was talking about.
Let's take a bull primary trend. A bull primary trend is seen when an item spends an extended period of time rising. Of course, in the course of the rise there will be many secondary corrections, but each correction will be followed by new highs. All true primary trends end in exhaustion. A primary bull trend ends when the last of the participants have "had enough" and take their profits.