use

Compared meaning: use something for a purpose (verb).

比较义项：为达到某种目的而使用某物或某种方法（动词）。

• use 本词

  The neutral, everyday word for putting something to use; fits any register, spoken or written, with no special formality.

  中性、日常用词，表示“使用”某物，口语书面皆可，没有特殊正式色彩。

  Can I use your phone to make a quick call?

  我可以用一下你的手机打个电话吗？

• employ

  Formal, mostly written register; suggests deliberately or skillfully using a method, tool, or resource to achieve an effect (its other sense, 'hire', is not compared here).

  较正式，多用于书面语；强调有目的、巧妙地运用某种方法、工具或资源以达到效果（其“雇用”义不在此比较）。

  The company employed new software to speed up production.

  这家公司采用了新软件来提高生产速度。

• utilize

  Formal or technical register, sometimes sounds stiff or bureaucratic; emphasizes making practical or efficient use of something, especially a resource.

  正式或技术性语域，有时略显生硬或官腔；强调实际、高效地利用某物，尤指资源。

  The team utilized every resource available to finish on time.

  团队利用了所有可用资源按时完成了任务。

All three mean using something for a purpose, but formality differs. Use is the neutral, everyday word. Employ is formal, mostly written, suggesting a method used skillfully (its other meaning, hire, is not compared here). Utilize is formal, emphasizing efficient use of a resource.

这三个词都表示“使用”某物来达成目的，但正式程度和语气不同：use最基础、最口语化；employ和utilize更正式，常带有“巧妙地/有效地运用”的意味。这里不比较employ的另一义项“雇用”。

Compared meaning: use or the way something is used (noun).

比较义项：使用／用法（名词）。

• use 本词

  Names the act of using something, or its purpose/benefit; common in fixed phrases like 'no use', 'of use', 'put to use', 'many uses'. Neutral, everyday register, works for almost any object or activity.

  “use”指使用这一行为本身，或由此带来的用处／好处；常见于固定搭配，如“no use”（没有用）、“of use”（有用处）、“put to use”（加以利用）、“many uses”（多种用途）；语域中性，日常口语中几乎可用于任何物品或活动。

  There's no use complaining about the delay now.

  现在抱怨这次延误已经没有用了。

• usage

  Focuses on the way, pattern, or amount something is used, especially resource consumption (data, water, electricity) or language convention; often paired with words like 'common' or 'modern', and sounds more formal or technical than 'use'.

  “usage”侧重使用的方式、模式或用量，尤其用于资源消耗（如流量、用水、用电）或语言使用惯例；常与“common”“modern”等词搭配，语气比“use”更正式、更偏技术性。

  Check your phone's data usage before the month ends.

  在这个月结束前，先查一下你手机的流量使用情况。

Both are nouns about using something, but focus differs. Use names the act of using something, or its purpose, as in 'no use' (its verb sense is not compared here). Usage focuses on the way, pattern, or amount something is used, like data or water.

“use”和“usage”都能表示与“使用”相关的意思，但“use”更强调使用这一行为本身或由此带来的用处，常出现在固定搭配中；“usage”更强调使用的方式、模式或用量，多用于资源消耗或语言习惯等较正式的语境。这里不比较“use”作动词（使用某物）的用法。

Compared meaning: what something is used for (noun).

比较义项：某物的用途／功能（名词）。

• use 本词

  The most general word for what something is used for; casual and concrete, often plural ('several uses') or paired with 'find a use for'.

  最普通的词，指某物可以怎样被利用；比较口语化、具体，常用复数形式（'several uses'）或搭配'find a use for'。

  People have found a clever new use for old tyres as garden planters.

  人们为旧轮胎找到了一个巧妙的新用途，把它们用作花园花盆。

• purpose

  Stresses the goal or reason something was made or done for; more formal and abstract than 'use', usually singular, and common for planned events or designed objects.

  强调某物被制造出来或某件事被做的目的／原因，比use更正式、更抽象，通常用单数，常用于有计划的活动或专门设计的物品。

  The purpose of the fire drill was to prepare everyone for a real emergency.

  这次消防演习的目的是让大家为真正的紧急情况做好准备。

• function

  Highlights the specific role a part plays within a system, machine or organism, so it pairs naturally with body parts, buttons and mechanisms rather than abstract goals.

  强调某个部件在系统、机器或有机体中所起的具体作用，常与身体器官、按钮、装置搭配，而不是抽象的目的。

  The main function of the heart is to pump blood around the body.

  心脏的主要功能是把血液泵送到全身。

Use, purpose, and function describe what something is for, but they differ. Use is the general, casual word. Purpose is formal, about the goal behind a design. Function is a part's role in a system or machine. 'On purpose' is not compared here.

这三个词都可以表示某物是用来做什么的，但语气和搭配不同：use最口语化，常指实际的使用方式；purpose更正式，强调设计或行动背后的目的；function则强调在系统、机器或身体器官中所起的具体作用。这里不比较use作动词「使用某物」、function作动词「运转、起作用」，以及purpose在固定短语「on purpose（故意）」中的用法。