20-25, 20-30, 20's, 20s, 25-30, 3, acknowledging, adult, associate, book, business man, business woman, businesspeople, calling, cellphone, cellular, cellular phone, chatting, cheerful, colleague, color, colour, communicating, confident, connecting, connexion, conversation, conversing, creative, daylight, daytime, delighted, dialog, dialogue, discussing, enjoying, enterprise, executive, fellow, female, gal, genesis, gentleman, glad, gratifying, guy, happy, hearing, human, human being, implement, inception, indoor, inside, joining, jolly, joy, lady, lighthearted, listener, male, merry, mobile, mobile phone, multitasking, operating, origin, person, phone, pleasing, pleasure, responding, satisfaction, seated, smile, speaking, start-up, talker, telephone, telephoning, three, three-quarter length, toiling, twenties, twenty, western european, wireless, women, work, workplace, writing instrument,
