Even if we'd only known each other a single day, she should have noticed the difference.

If it changed, no one local would notice the difference.

One must add, however, that not everyone may notice the difference.

No one stopped me or seemed to notice the difference.

They were still cold enough on his face that he noticed the difference.

You do notice the difference in the quality of play, though.

But many women may never notice the difference in the look of their skin.

Tell your doctor if you notice a difference in how well the treatment plan is working.

Open the windows and you'll notice the difference as well.

But as it never really was, the boys had not noticed the difference.