Pocket cards is another name for hole cards. So J4 are pockets, JJ is a pocket pair.
Anyway, it's not a good strategy to play every connected card, whether it be suited or something like 89. The odds of flopping a made flush or a made draw is only 1%. Flopping a flush draw is 11%, but if you are playing 85 suited chances are your flush is beat even if you draw out.
And in addition to what you said: Odds/probability of making a flush by the river 15 to 1
(or 6.25% chance)
Preflop flush chasing is -EV in the long run. Very -EV.
And something that might be a bit off-topic, but not too much
I was talking to my cousin and he asked me why i always fold to a raise with 89o, but (sometimes) i call the raise with 89s. It's a much better situation when you have the chances to connect with the board in 2 ways: either a flush, either a straight.
But here's my question: when do you decide that you can/should play a suited pocket? (i'm guessing most of you play suited
hands like KQ, J9, QJ etc., not J4 or K2 etc.)