Why is the castle called a Rook?

Oh ok I see it now

The chess piece's name, "Rook," is derived from the Persian word "rukh," meaning "chariot." The chariots of the early sets replaced the towers. The chariot was eventually replaced by a castle-like structure in European designs, perhaps as a result of misunderstandings. The modern castle-shaped rook that we are familiar with today is the result of this evolution.

Since when did we call it a ‘castle’?

This thread was the first time I saw somebody call a "rook" a "castle", I don't think any serious chess player does that (also there's "castling" already so why call a piece a castle). "tower", yes, but "castle", no.

Yeah i’ve never heard it called “castle “ either

it comes from Persian Rukh which is also where just about everything except for the bishop came from, why it looks like a castle tower I don't know

it's called castling because the rook looks like the tower of a castle

I know that, my point was to call the piece itself a castle as well wouldn't be very good for clarity.

Funny thing: while in English the piece is called "rook" and the special move "castling", in German (and quite similar in French) the piece is called a "tower" but the special move is called "Rochade" ("Roque") on the basis of the Persian name for the piece.

very interesting