A relative concept highlights not only costs to physical health.

But success in this field is a relative concept.

Small victories, however, were a relative concept, especially in hostage negotiations.

With members of Congress, relevant is clearly a relative concept.

As usual in the dizzy world of entertainment, reality is a relative concept.

But understated is a relative concept, particularly for some younger players.

Then again, time itself was a relative concept for Dia.

Still, speed in creating an 80-acre waterfront park is a relative concept.

But it still means that medical privacy is becoming a very relative concept.

Of course, not being paid is a relative concept.