backpack, backpacks, book, books, boy, boys, buddies, buddy, casual clothing, cheerful, cheerfulness, color, color image, colored, colors, colour, colours, companionship, comrade, comrades, delight, delighted, delights, education, education building, enjoyment, eye contact, friend, friendliness, friends, friendship, friendships, front view, front views, glad, gladly, gladness, gratified, group, happiness, happy, horizontal, horizontally, horizontals, human, human being, humans, indoor, indoors, inside, jollies, joy, joyful, joyous, juvenile, juveniles, kids, locker, lockers, looking at camera, male friendship, merry, minor, minors, multiracial group, pal, pals, people, person, photographic, photography, pleased, pleasure, portrait, portraits, portraiture, pupil, pupils, rucksack, rucksacks, school, school building, school buildings, schools, smile, smiles, smiling, standing, stood, student, students, teen, teenage, teenage boy, teenage boys, teenager, teenagers, teens, three quarter length, three-quarter length, together, togetherness, tome, tomes, toothy smile, two, two people, twos, young, youngster, youngsters, youth, youthful, youthfulness, youths, europe, of african descent, scandinavia, sweden