Radiation
noun, verbal noun
ほうしゃ
放射 （ほうしゃ） Radiation
放射能 （ほうしゃのう） Radioactivity, Radiation
反射 （はんしゃ） Reflection, Reflex
Radiation 放射 is released 放 and shoots 射 out in all directions; unlike reflection, which only bounces off in one direction.