| A | B |
| autoimmune | production of antibodies by the body against itself |
| crystallized intelligence | thought process that uses experience in solving problems |
| decade | a period of ten years |
| fluid intelligence | thought process that involves short term memory and abstract thought |
| gastric motility | movement through the gastrointestinal system |
| generativity | sharing experiences and knowledge with younger generations |
| insomnia | inability to go to sleep |
| intimacy | sharing of oneself honestly and completely with another person |
| isolation | separation of self physically or emotionally from other people |
| menopause | the permanent ceasing of menstruation |
| osteoporosis | degenerative bone disease resulting in loss of bone tissue |
| presbyopia | inability to focus on near objects(far-sighted) |
| procreation | reproduction of offspring |
| sedentary | low activity level |
| stagnation | stopping of growth |