It seems there might be a misunderstanding in your question regarding "blood colts." It's possible you meant "blood clots."
Blood clots are indeed clumps of blood that have changed from a liquid to a solid state. They can form in veins or arteries and are often the body's natural response to stop bleeding. However, when blood clots form inappropriately within veins (such as in deep vein thrombosis), they can pose serious health risks.
Tumors, on the other hand, are abnormal growths of tissue that can be benign (non-cancerous) or malignant (cancerous). They are not the same as blood clots.
If you have more specific questions about blood clots or tumors, please feel free to ask!