gain

Compared meaning: an increase in amount or degree (noun).

比较义项：增加（名词）。

• increase

  A neutral, general word for a rise in any amount or number, used for prices, population, temperature, and more; does not imply effort or benefit.

  中性、通用的词，指任何数量或数字的上升，可用于价格、人口、气温等，不暗示努力或好处。

  There has been a sharp increase in the price of coffee this year.

  今年咖啡的价格出现了大幅增加。

• gain 本词

  Emphasizes an increase acquired through effort, exercise, or a process, often positive, and typically used with 'in' before the thing gained.

  强调通过努力、锻炼或某个过程而获得的增加，通常带有积极色彩，常与 in 搭配，表示在某方面的增加。

  She noticed a real gain in muscle strength after months of training.

  经过几个月的训练，她明显感觉到肌肉力量有所增加。

Increase and gain both mean a rise in amount, but increase is neutral, used for any rising number like prices or population. Gain stresses an increase won through effort, often positive, and usually followed by 'in'. Only the noun sense is compared here.

两词都可表示“数量或程度的增加”，但 increase 是中性、通用的说法，可用于价格、人口、气温等任何上升的数值；gain 则强调通过努力或某个过程“获得”的增加，常带积极色彩，多与 in 搭配（a gain in strength）。increase 和 gain 也都能作动词，但这里只比较名词义项。

Compared meaning: money or value gained (noun).

比较义项：利润、收益（名词）。

• gain 本词

  Refers broadly to an increase in wealth or value, especially from investments, e.g. 'capital gain'; does not necessarily involve subtracting costs, unlike profit.

  泛指财富或价值的增加，尤指投资带来的收益，例如“资本利得”（capital gain）；不一定涉及扣除成本，这一点与profit不同。

  She had to pay tax on the capital gain from selling her shares.

  她因出售股票获得的资本利得而需要纳税。

• profit

  Specifically the money a business earns after subtracting costs and expenses; the standard, concrete term for business earnings, unlike the broader 'gain'.

  特指企业在扣除成本和支出后赚取的钱；是表示企业盈利的标准且具体的说法，比含义更宽泛的gain更专门。

  The company doubled its profit after cutting production costs.

  这家公司削减生产成本后利润翻了一番。

Gain and profit both mean money or value gained. Gain is broader, often used for growth in wealth or investments, like a capital gain; it need not mean income after costs. Profit specifically means money a business earns after costs, the usual business term.

这两个词在“利润、收益”这一意义上接近，但gain含义更宽泛，常用于投资或财富增长的语境，语气也更正式；profit则专指企业收入减去成本后的所得，是商业场景中最常用的说法。这里不比较gain作动词表示“获得、增加”（如gain weight）的用法。