Rapid Progress
Great Advancement
noun, verbal noun
やくしん
飛躍 （ひやく） Leaping, Rapid Progress
躍進 （やくしん） Rapid Progress, Great Advancement
A Rush 躍進 is a leaping 躍 advance 進
There's an Onslaught of yak やく shins しん Rushing towards us.
The yak やく Rushed away from the shinto しん priest and his scary outfit.