A couple of related words are threesome and triad, both of which mean a group of three. In general, threesome is used for people and triad, for inanimate objects.

When the Roman Empire crumbled, Europe was besieged by famine. What does it mean to look at it

from a scientific point of view?

Which denotes cross-fertilization? Is there one way to test the intercorrelation?

What is the significance of “Had someone gone on escapades?”

When you call days “complete” it means that a day’s task has been complete.

I just have a really hard time. it can feel like a trial or study or testing. When you’re having fun and having good time can feel like a festival.

What would they have done differently if we learned to love an animal?

A counterfoil is the part (the whole) of the ticket which is retained by

the issuing authority. C is the symbol of the counterfoil not stated. (See table)

How is a website inaccessible when it is there, and the use of it is irrelevant when you are using it?

EDIT: I’m not necessarily looking for one word. One option is activated / deactivated.