Grunch
Hand 1
I fold the turn against a passive player. Even if he is loose, a true passive player is probably on the flush if he raises you you on the flop. Kings are certainly possible, but those diamonds make me ill, and when the second king comes up, I know I'm beat. - (edit: if I make it to the river, no way I'm folding the FH against potential quads, when I think he has the flush but I probably would have folded earlier, then kicked myself in the nuts, then gone on tilt and donked off my whole stack)

Hand 2 - I play it exactly like that but I call the river. One of them probably has a 7, but they didn't bet top pair on the flop or turn. 2 pair is a strong possibility, but you have them beat. No flush and a highly unlikely straight. Gotta call the river.