который

A broad neutral word: asks about a quality, kind, or choice; depending on context it can be closer to what or which.

A bookish and formal word used in documents, legal language, or elevated style, not in everyday speech.

An archaic or colloquial word found in old literature or dialects; it is rarely used in modern neutral speech.

Any one at all; emphasizes indefiniteness and the lack of a specific choice.

A colloquial indefinite word meaning “any, some, it doesn’t matter which” or “some one, unspecified.”

An unclear, unknown, or unimportant person/thing; often conveys the speaker’s uncertainty.

Means “any one of several”; used when it does not matter which item is chosen.

Every one without exception or any possible one; often sounds more general and slightly more literary than “любой.”

Points to an already known or specifically mentioned item; in official style it often means “this/the one specified here.”

A demonstrative word: “this” usually points to something visible, known, or nearby rather than choosing from several options.

A demonstrative word for something distant, already known, or contrasted; usually closer to “that” than to “which.”