No, sneakers, trainers and tennis shoes are not the same things. Sneakers are a type of shoe that are typically lightweight, comfortable and designed for everyday activities such as walking, running and casual activities. Trainers are a type of athletic shoe used for physical activities such as running, weightlifting and aerobics. Tennis shoes are a type of athletic shoe specifically designed for playing tennis. Each type of shoe is designed to meet the particular needs of the activity it is intended for, providing comfort, cushioning, arch support and a secure fit.