Ключевые слова: abstract, age, aging, background, business, care, career, clock, concept, conceptual, crossword, definition, disease, education, elderly, future, hand, health, healthspan, illness, information, investment, letter, lettering, life, lifespan, lifestyle, limit, longevity, maximum, old, old age, past, plan, position, progress, project, schedule, score, society, success, target, test, text, tile, time, up, win, word, work,