To use terminology borrowed from computer science, grey areas are not bugs of social institutions, they are features.

Scholars use terminology inconsistently, sometimes referring to right-wing populism as radical right or other terms.

Ranking systems used typically use terminology associated with commercial aviation, such as designating senior pilots as captain.

Game reviewers and scholars sometimes debate whether they are using terminology such as tactics or strategy appropriately.

This shows that, using terminology from universal algebra, the modular lattices form a subvariety of the variety of lattices.