A trend's something that somehow becomes popular within mainstream society over a relatively long period of time (more than a few years). It's the direction of a sequence of events that's some momentum and durability. I'd be more specific adding that "A trend's the correlating factor between a series of unrelated elements towards which a sizable amount of people are sensitive at a certain point of time (Emmanuel Frenck, 2004)". The amount of people and the dynamics (duration) will define whethe… (More on Fads)