concept

the concept of time

introduce a new concept

Many argue that it is a flawed concept.

Courageous restraint wasn't a concept they grasped at all.

Now other organizations are implementing the Desertec concept.

You introduced me to the boxed wine concept.

It beautifully illustrates a concept so hard to explain.

So this is definitely not a refinery concept.

Math has fewer concepts but they're chained deeper.

And it's this universal concept that is totally subjective.

And there's a concept you should be familiar with.

That in itself is a new concept.