Is a "startup" the same as starting a company? If I start a company without ever seeking external funding/accelerating/etc, is my company a "startup" in the sam

Is a "startup" the same as starting a company? If I start a company without ever seeking external funding/accelerating/etc, is my company a "startup" in the same way that "founding a startup" implies? I was under the impression that starting a company in general and 'starting a startup' are not exactly the same thing, though I surely might be wrong about this.