What term describes a new growth or tumor?

The term that describes a new growth or tumor is "neoplasm." A neoplasm can refer to any abnormal mass of tissue that grows uncontrollably and may be benign or malignant. The term itself comes from the Greek words "neo," meaning new, and "plasma," meaning formation or growth, which accurately conveys the concept of a new growth.

In contrast, carcinoma refers specifically to a type of cancer that arises from epithelial cells, making it more specific than the broader term neoplasm. Similarly, adenoma and fibroma are specific types of neoplasms. An adenoma is a benign tumor of glandular origin, while a fibroma is a benign tumor made up of fibrous or connective tissue. These specific terms do not encompass all forms of new growths or tumors, further distinguishing them from the general term neoplasm.