2, 2 people, 30-34 years, 30-35 years, 30s, apparel, arranging, blue collar worker, blue-collar worker, blueprint, builder, building contractor, building contractors, caucasian ethnicity, caucasians, clothes, clothing, colleague, colleagues, color, color image, colored, colors, colour, colours, communicate, communicated, communicates, communicating, communication, communications, concentrate, concentrated, concentrates, concentrating, concentration, construction, construction industry, construction site, construction sites, construction worker, constructions, contractor, contractors, defending, delight, delighted, delights, development, discussion, drafts, engineer, engineering, engineers, enjoyment, expert, expertise, experts, floor plan, floor plans, focusing, garment, garments, half-length, hard hat, hard hats, hardhat, hardhats, hat, hear, heard, hearing, hears, helmet, horizontal, horizontally, horizontals, human being, humans, indoor, indoors, industry, inside, joy, joyful, joyous, layout, layouts, listen, listened, listener, listeners, listening, listens, man, meet, meeting, meetings, meets, men, met, mid adult, mid adult men, mid adult women, mid adults, mid-adult man, mid-adult woman, occupation, office, offices, organizing, people, person, photographic, photography, plan, planned, planning, plannings, plans, pleasure, preparation, preparations, professional occupation, protect, protected, protecting, protection, protects, reflective clothing, renovation, safeguard, safeguards, safety, safety-hat, safety-hats, security, smiling, teamwork, technology, two, two people, twos, uniform, uniforms, waist up, waist-up, whites, woman, women, work, worked, worker, workers, working, works, europe, graduate profession, professional occupations, scandinavia, sweden, western european