盈利 (yíng lì) is a formal noun meaning 'profit, financial gain' — the surplus after costs in a business or investment. It is nearly synonymous with 利润 (lì rùn), but 利润 is more concrete and often used for a specific product or period (e.g., 利润率 'profit margin'), while 盈利 is broader and more abstract (e.g., 盈利模式 'profit model'). 收益 (shōu yì) is broader still, covering earnings from any source (salary, investment returns).