What is the meaning of realize?

The verb realize has mainly the following meanings:

• To comprehend completely or correctly.
• To bring into reality; make real: He finally realized his lifelong ambition to learn how to play the violin.
• To make realistic: a film that realizes court life of the 17th century.
• To obtain or achieve, as gain or profit: She realized a substantial return on the investment.
• To bring in (a sum) as profit by sale.