wool - n - gather

Together is an abbreviation that comes up when knit or purl stitches are worked as one. K2tog or p3tog simply mean the you insert your needle through all of the indicated and pull a loop through all of them, thus decreasing a total number of stitches. K2tog is a single stitch decrease because you get 1 stitch out of 2. P3tog is a two stitch decrease because you get 1 stitch out of 3.