Conflict in strategy games takes place between groups or singular combatants, usually called units.

The two types will be called lexical units and lexemes.

If we choose to use what are called natural units, then the number representing the frequency of a photon would also represent its energy.

Within these regions are 74 second-level areas called regional units.

American liaison officers authorized to call in the support travel with the Russians units.

Campers are organized into age and ability appropriate cabin groups called units.

The plan, she said, calls for 300 to 350 units, "probably rental."

Every player has a military base and people or vehicles (these are called units).

Systems of units based on these are called natural units.

Someone needs a quick refresher course in what social scientists call "units of analysis".