wide variation
wide difference
wide gap

The door continued to open, until there was a gap wide enough for a man to slip through.

But the policies have opened wide gaps between the rich and the poor.

At one point he pointed out a low place in the mountains, a wide gap.

A. There was a wide gap between the two schools.

There was a wide gap in the middle, several feet across.

She saw them through the wide gaps between the trees.

The wide gap that has received the most attention in recent years - between black and white students - remained about the same.

There is still a wide gap of trust between the developing and the developed world.

There is clearly a wide gap between instructions and means here.

At this point, there was a wide financial gap between the wealthy and the working class.