A boy swims shirtless with a black and red bathing suit while a seagull sits on the sand.
A boy swims nude while a seagull eats his peanut butter sandwich.
A person can be nude or wearing a bathing suit at a time.
THE BOY CANNOT BE NUDE AND WEARING A BATHING SUIT AT THE SAME TIME.
A boy can not be nude and wearing a bathing suit.