Combo
One specific two-card holding within a hand class, such as one of the six ways to be dealt pocket aces or one of the four ways to hold a particular suited ace.
A range is not a list of hand classes; it is a weighted count of combinations. Pocket pairs have six combinations each, suited hands have four, and offsuit hands have twelve, which is why a range described as "big pairs" is not automatically more likely than "suited broadways": the actual combination count decides the weighting, not the number of hand classes named.