Depends on who's asking. For the Federal government, gross income is income from all sources- earned and unearned. Unearned income is your money making money- investments, dividends, capital gains, sale of property. Earned income is, well, what you actually toiled to attain, like wages, consultation fees, jury duty payment, etc.
Coronary artery calcification is the result of calcium deposition in the coronary arteries. Coronary arteries are blood vessels that deliver blood supply to the heart for its nourishment and oxygen needs.
Calcifications can be caused by inflammation or elevated levels of blood calcium, known as hypercalcemia. Calcification can be part of a normal healing response to musculoskeletal injuries. Calcifications are often found in arteries affected by arteriosclerosis (hardening of the arteries), in benign and malignant breast processes, at sites of bone or cartilage injury, and sometimes within cancers.