The resulting mess is not easily collated into simple categories.

Perhaps because he is hard to place in a single, simple category, Corn has not yet been the subject of a book-length critical study.

Cacti show a wide variety of growth habits, which are difficult to divide into clear, simple categories.

The Commonwealth's political system is difficult to fit into a simple category, but it can be tentatively described as a mixture of:

These splendidly simple dual categories that seem to obsess the modern mind.

Many of the tactics also defy simple categories like official desertion.

When animals do not fall into a few simple categories, quantitative genetic techniques become more practical.

Very often they were part-time farmers and merchants as well; simple categories of occupation do not work in this sort of society.

The complexity of the Shining Path, on the other hand, stems from the fact that it fits into no simple category.

That was a useful report, not only with regard to a simple category like job satisfaction.