Hood's battlecruiser role and Denmark Strait

Why call Hood a battlecruiser when she fought Bismarck like a battleship?

Her design and refit history remained battlecruiser-oriented; Britain used what was available when a battleship engagement arose.

The Royal Navy built and refitted Hood around battlecruiser qualities such as speed, range, and global commerce protection rather than routine battle-line combat. Wartime scarcity nevertheless placed her against Bismarck at Denmark Strait alongside a new battleship that had not fully worked up. The case separates a ship's intended role from an emergency mission imposed by events. A suggested fatal shell path near a gap in the torpedo protection remains a cautious hypothesis rather than a settled reconstruction of the loss.