When the lines coincided perfectly, potters called it a "meeting of the souls," Mr. Koepke said.

The simplest kind of couple consists of two equal and opposite forces whose lines of action do not coincide.

The ideological lines of liberalism and conservatism have never coincided with actual party lines.

On the north Norfolk coast, the line of the Carboniferous shore roughly coincides with the modern one.

There is no line of centers, however, and the synthetic construction fails as the two parallel lines coincide.

The lines don't quite coincide and the drawing is hung well above eye level.

The lines coincided exactly with the Queen Artemisia's known course from Shaughai.

Remarkably, the coastal line between the southern ocean and the northern continent roughly coincides with the equator.

Dotted lines indicated approximate places where the lines coincided.

The line didn't coincide with any of the streets, but cut across them at a steep angle.