They form the unique legal category of "Latvian non-citizens".

Under this system, every health condition can be assigned to a unique category and given a code, up to six characters long.

A category unique to this period and quite appropriate to the philosophy of romanticism was mourning jewellery.

Britain, he wrote, was being treated "now as just another country, now as an ally in a special and unique category".

The channel displays roughly 12 unique categories of videos with exactly 75 video titles in each category.

"We don't see smartphones as a unique category," he said.

It's a unique category of its own.

Contests are held each month, each with a unique category.

This creates a unique category of them because it alters the organisms as a group but in ways unlike traditional domestication.

Teams will be shown five unique categories.