I am studying for the Level 1 CMT test. As I've studied, I have regained respect for the basics. Trend Classifications are important when speaking in technical terms. Let's review...
Secular Trend: 25+ years
Primary Trend: 2 - 5 years
Intermediate Trend: 9 months - 2 years
Short Term Trend: less than 9 months
I will use these classifications often on this blog, so be sure you store these in your memory banks!