is an umbrella term for two main conditions=
and
Both cause inflammation in the digestive tract and are considered chronic conditions, which means they are long-term conditions. Ulcerative colitis and Crohn’s disease tend to flare and calm down over time. Both are treatable with medicines.Ulcerative colitis and Crohn’s disease can look similar at first, with symptoms such as diarrhea, belly pain and fatigue. But where they occur in the intestines and how deep the inflammation goes, known as transmural involvement, are different. Those differences help explain the symptoms and help your healthcare team decide which tests to order and what treatments or surgeries might be recommended. There are main differences between ulcerative colitis and Crohn’s disease”
MAYO CLINIC (Ulcerative colitis vs. Crohn’s disease – Mayo Clinic)