✅ Geriatric : مربوط به سالمندی
✅ Geriatrics : طب سالمندان
✅ Geriatrician :  متخصص سالمند شناسی
✅ Gerontology : سالمند شناسی
✅ Gerontologist : سالمند شناس
👉 A specialist in geriatric medicine.
👉 Geriatrics, or geriatric medicine, is a medical specialty focused on addressing the unique health needs of older adults

✅ Pediatric : مربوط به بیماری های کودکان
✅ Pediatrics : پزشکی اطفال
✅ Pediatrician :  متخصص اطفال
👉 Pediatrics is the branch of medicine dealing with the health and medical care of infants, children, and adolescents from birth up to the age of 18.

✅ Obstetric : مرتبط با زایمان و مامایی
✅ Obstetrics : علم پزشکی مرتبط با زایمان و مامایی
✅ Obstetrician : متخصص زایمان
👉 The part of medical science that deals with the birth of children

✅ Gynecology : پزشکی مربوط به بیماری های زنان
✅ Gynecologist : متخصص بیماری های زنان
👉 gynecology. Gynecology is the care of a woman’s reproductive organs and health. Obstetrics involves the treatment of pregnant women, including the delivery of babies.
Obstetrician gynecologists play a critical role in women’s healthcare. In fact, an OB/GYN may be the only doctor that many young women see on a regular basis.