4, 18-19 years, 20-24 years, 20-25 years, 20s, adolescence, adolescent, adolescents, african, african american, african americans, african ethnicity, african-american, african-american ethnicity, afro american, afro-american, arts culture and entertainment, attitude, bonded, bonding, buddies, buddy, caucasian ethnicity, caucasians, cheerful, cheerfulness, color, color image, colored, colors, colour, colours, companionship, comrade, comrades, cool, cool attitude, dark, darkness, delighted, diversity, dusk, enjoy, enjoyed, enjoying, enjoyment, enjoys, evening, evenings, eye contact, few, focus on foreground, foreground, four, four people, free time, friend, friendliness, friendship, friendships, front view, front views, fun, generation z, glad, gladly, gladness, gratified, grimace, groups, hang out, hanging out, hanging out together, happiness, happy, headshot, horizontal, horizontally, horizontals, human, human being, humans, immature, immaturity, jollies, joy, joyful, joyous, juvenile, juveniles, kids, leisure, leisure time, lifestyle, lifestyles, looking at camera, man, men, merry, minor, minors, mixed race people, mixed race person, multi ethnic group, multi-ethnic group, multi-racial, night, nightfall, nighttime, nite, nites, outdoor, outdoors, outside, pal, pals, people, person, photographic, photography, pleased, portrait, portraits, portraiture, puberty, pubescence, pubescent, self portrait, self portraits, selfie, selfies, setting sun, setting suns, smile, smiles, smiling, spending time, stick out tongue, sticking out tongue, stuck out tongue, sundown, sunlight, sunset, sunsets, teen, teenage, teenager, teenagers, teens, together, togetherness, toothy smile, twilight, whites, woman, women, young, young adult, young men, young women, youth, youthful, youthfulness, youths, europe, germany, of african descent, western europe, western european