A gray-haired man rides a bike in front of a bus advertising Ironman.
An older man rides a bike in front of a bus with a movie poster on it.
Just because a man has gray-haired doesn't mean he is older.
Just because there is a bus advertising Ironman it does not mean there is a movie poster on it.
Just because a man has gray hair does not mean he is an older man. Just because a bus is advertising Ironman does not mean it has a movie poster on it.