Vancouver, WA vs. Vancouver, BC: Neither is a Capital

The question contains a category error: cities do not have capitals; countries, states, and provinces do.

Clarification

• Vancouver, Washington (USA): City in Clark County. State capital: Olympia.
• Vancouver, British Columbia (Canada): City in Metro Vancouver. Provincial capital: Victoria.
• Canada (nation): Capital: Ottawa (Ontario).

Both Vancouvers are major urban centers named after Captain George Vancouver, but neither is a capital.