immense, tremendous
夥 centers on an overwhelming scale: something immense or tremendous in amount, size, or degree.
夥 combines 果 (fruit, result) with 多 (many), suggesting a great quantity or abundance. The exact historical development is uncertain, but the component combination visually reinforces the idea of immensity.
Picture a tree 果 bearing so much fruit that it becomes many 多 — an immense, tremendous harvest.
For カ, imagine a colossal car (カ) so immense it can carry the tremendous harvest of fruit from the 果 tree.