What does "carcinoma" and "sarcoma" mean?

What does "carcinoma" and "sarcoma" mean?

They are both different types of cancer. Carcinoma is cancer of epithelial tissue, which is basically tissue that lines the surface of a structure. In other words, in the case of carcinoma breast cancer, it is in the lining of the ducts in the breasts, and the lining of the lobules in the breast. The majority of carcinoma is adenocarcinoma in the breast. Sarcoma is cancer of connective tissue, so in breasts it's the tissue between the ducts; between the glands. While sarcomas can develop in the breast, they are much rarer than the adenocarcinomas that develop in breast cancer cases.