A guy and a girl on the beach next to the sea look at the blue skyA guy and a girl on the beach next to the sea look at the blue sky
A guy on a snowboard descends from the mountainsideA guy on a snowboard descends from the mountainside
Юноша, молодой человек ( разг. ). Вообще употр. в знач. человек, мужчина ( прост. ).