For now, let's just cut it to PA (price action) and possible derivatives of it aka price indicators for the sake of experiment. I define PA as making trading decisions depending on past prices alone.
It's not really that critical, because chart is just graphical presentation of trades occurred, be it candlestick, bar or exotic, such as Kagi, Renko or P&F is a question of taste just like choice of price derived indicators rather than essential element of data input. In my (possible objective) view making trading decisions based on OHLC numbers printed in the newspaper or based on the same numbers demonstrated by the candlestick chart are both cases of PA/TA reading.
Hey, ain't technology great? Here is Suzanne's webinar: http://www.youtube.com/watch?v=UHfdDrRSWmY "This webinar presented by Professional Trader and Trading Coach Suzanne Bodlovic, features a method of analyzing markets using momentum patterns while combining multiple charting time frames to confirm market trend to help give traders an edge on being on the profitable side of the trade and avoid over-trading."
I was going to say TA is making trading decisions on something other than income statements, balance sheets, PE ratios, PEG ratios, news, etc. I like your description better.