Ключевые слова: air, bench, black, blackboard, botanical, chalk, chalkboard, concept, contour, country, design, draw, drawing, ecology, environment, figure, fir, firtree, flat, forest, fresh, graphic, hand drawn, icon, illustration, image, isolated, landscape, line, natural, nature, outdoor, outline, park, paysage, pine, plant, scene, scenery, sign, silhouette, sketch, tall, trace, tree, view, white, wildlife, wood,