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Carcinoma
Technical Term
Carcinoma is used by medical professionals and in academic contexts, it's not typically used in casual conversation. 
Tissue Specificity
Carcinoma refers to cancers from specific cells, either the skin or internal lining, not all cancers. 
Not For Benign
Carcinoma is not used for noncancerous (benign) tumors; it indicates malignancy. 