蹦⇒ 蹦 bèng, to jump/to bounce/to hop 活蹦乱跳 huóbèngluàntiào, [活蹦亂跳], to leap and frisk about (idiom); lively/healthy and active 蹦蹦跳跳 bèngbèngtiàotiào, bouncing and vivacious 欢蹦乱跳 huānbèngluàntiào, [歡蹦亂跳], glowing with health and vivacity (idiom)
跶⇒ 跶 dā, [躂], to stumble/to slip/variant of 達|达[dá]