A S might be expected, these two books cover much of the same ground.

The book covers the time period between the 1820s and 1994.

The book covers the first 50 years of his life.

The book covers the events of the years from 1591 to 1660.

This puts him in a difficult position, one his book does not cover.

The two books cover some of the same ground but are quite different in tone, focus and organization.

The book covers the period of Smith's life up until 1831.

Books covered a table and stood in piles on the floor.

I pointed to a wall where books covered the entire surface.

This book covers a period of some two hundred years.