Definition of Trend

The concept of trend is absolutely essential to the technical approach to market analysis. all of the tools used by the chartists-support and resistance levels, price patterns, moving averages, trendlines, etc... have the sole purpose of helping to measure the trend of the market for the purpose of participating in that trend. we often hear such expressions as "always trade in the direction of the trend," "never buck the trend," or "the trend is your friend." so let's define what a trend is and classifications.
in a general sense, the trend is simply the direction of the market, which way it's moving. but we need a more precise definition with which to work. First of all, markets don't generally move in a straight line in any direction. Market moves are characterized by a series of zigzags. these zigzags resemble a series of successive waves with fairly obvious peaks and troughs. it is the direction of those peaks and troughs that constitutes market trend. Wether those peaks and troughs are moving up, down, or sideways tells us the trend of the market.