The distinction seems to be mostly a matter of terminology.

Certainly, there are times when the distinctions in the book seem forced.

These distinctions do not seem to have been particularly rigid.

But as hours passed, the distinction between them often seemed to blur.

The distinction between images and sensations might seem at first sight by no means difficult.

When it comes to food, in fact, distinction seems to be part of the point.

Indeed, these new distinctions seemed only to encourage him in his efforts to prevent nuclear war.

But the distinction between the two seems to have been established at an early period.

This distinction seems, on its face, too obvious to mention.

Indeed, the distinction between the two seems no more than convenient.