Function, function, efficiency, function, utility, efficacy

function

Functional efficiency

It refers to the beneficial role played by things or methods ; Efficiency of the

Function is defined as an attribute of an object that can meet a certain demand . Any attribute that meets the needs of users belongs to the category of function . The attribute that meets the actual needs of users is function , And the attributes that meet the potential needs of users are also functions .

Function is attribute . Software product function is an attribute that can meet the needs of users . Product function is the beneficial function of the product to users .

Function is efficiency 、 efficacy .

reference ：https://baike.baidu.com/item/%E5%8A%9F%E8%83%BD/10346898?fr=aladdin

Efficiency of the

It means utility ; effect .
efficiency 、 effect .
Efficiency means effective 、 Collective effect , That is, people are purposeful 、 The efficiency and effect of organized activities , It reflects the correctness of the selection of the objectives of the activities carried out and the degree of their realization . Efficiency is the measure of work results , efficiency 、 effect 、 Efficiency is the basis for measuring efficiency .

Efficiency of the , The most basic explanation is the degree of achieving the system goal , Or the degree to which the system expects to meet the requirements of a specific set of tasks .

The beneficial function of things .

Effectiveness refers to the correctness of the purpose and means of using behavior and the advantage of the effect .

reference ：https://wiki.mbalib.com/wiki/%E6%95%88%E8%83%BD

efficacy

It refers to the expected result or effect of an action .
function ; efficiency
Function 、 Efficiency of the .

utility

The degree to which consumers have or consume goods or services to satisfy their desires is called the utility of goods or services .
The utility of a commodity or service depends on the subjective psychological evaluation of consumers , Determined by the intensity of consumer desire .

Effectiveness and function
Efficacy and function
Effect and function

Function

Refers to function and use
The function of the object and the efficiency it can produce .

effect

It means a certain object at a certain time （ Or none ） A space （ Or none ） In a certain process , As a means 、 Tools , The final result .
Influence on people or things 、 effect

In a broad sense , If something is done or something has a changing effect on another thing or thing, it is called functioning , In a sense, action can be equivalent to effect