Belly flop noun – A dive in which the abdomen bears the main force of impact with the water. Slope and belly flop are semantically related. In some cases you can use "Slope" instead a noun phrase "Belly flop".
Slope noun – The degree to which something rises up from a position level with the horizon. Belly flop and slope are semantically related. Sometimes you can use "Belly flop" instead a noun "Slope". Nearby Words: slop, sloping, sloped