Advising someone to tighten up

I think most books and poker tracker define Loose and tight as a measure of how many hands a player plays. A tight player may only play the top 10 or 15 starting hands while a loose player may play top 50 hands. I think many times people include other measures into the loose tight definition, those being aggresive and passive which is more a description of betting strategy.

So when people refer to a tight player they often mean they not only play top hands only, but do not bet them agreesively and play passive after the flop folding if they don't catch a peice of the flop or just calling with few reraises. The loose player description not only means the player plays many starting hands but will bet even the weak hands agressively and will continue to bet, raise and reraise after the flop.