I had a colonoscopy cuz of nausea,bloating,cramping,diarreah.small polyp found,awaiting biopsie. what r all the diff colon diseases?

Too big a topic: Can't answer "all the colon diseases" in this small field. The large categories are infectious, malignant, inflammatory, drug-induced, and inherited. The biopsy result of your polyp will tell you what kind it is and therefore what category it falls into. Someone your age usually has benign (non-cancerous) polyps that are found incidentally while a colonoscopy is being done for other symptoms.