How and when did the word "nuclear" replace the word "atomic"?

The word "nuclear" took over from "atomic" when people started talking about big explosions and power plants instead of just tiny particles.

Think of it like this: "Atomic" is like a little toy car, small and simple. Scientists used to talk about atoms, which are the tiny building blocks of everything. But then they discovered that when you smash atoms together or split them apart, you get nuclear energy, which is like a supercharged toy car, powerful and able to do big things.

When scientists made the first atomic bomb in 1945, it was called an atomic bomb. But soon after, people started using "nuclear" more because they were talking about power plants, radiation, and even space travel, all things that use nuclear energy.

Today, we say "nuclear power" instead of "atomic power" because "nuclear" feels bigger and stronger. It's like saying "super toy car" instead of just "toy car."