If you hold an AQ or KJ of a suit, with a low card being led up to it, you have a "tenace," and you hope that the missing card is "onside" with the right hand opponent (RHO).
If you hold, say an AJ or a KT or a Q9 (and the missing cards are not in your partner's hand), is that also called a tenace, or is there a special name for this kind of a holding?
More to the point, if there are two missing cards, A and B, is it usually good technique to refrain from covering the first one, and only cover the second one? For instance if you have KTx, should you duck when RHO plays that J, and wait till he plays the Q, then you cover with the K, A captures, and your T is now high?