It's a subtle difference, but not if you happen to be looking for work.

In fact, there is a subtle difference between the 1960's design and the new one.

There may be subtle differences in color, paper or design.

Now he could see subtle differences, things that weren't exactly right.

A more subtle difference came in the form of religion.

But there are subtle differences in each of the areas.

But a tour found subtle differences in almost every department.

The players claim subtle differences among the three Florida schools.

He noticed the subtle differences as she changed before his eyes.

There is a subtle but crucial difference between the two services, however.