Of these three broad types, I find the two-lens models most interesting.

One can identify two broad types of approach, which I will call the democratic and the consultative.

Two broad types of batteries are in use for digital cameras.

All libertarians fall into one of these two broad types.

"News and business information is a pretty broad type of content," he said.

There are two broad types of research being sponsored and published.

However, there did seem to be two broad types.

Second, the two broad types of research focused on different age-groups.

There are also hybrids of the above broad types available, including ones that can actually test students on their notes.

Repellents, he said, generally fall into two broad types: contact and area.