How to access custom labels In Lightning Web Component?

 We import label using  @salesforce/label scoped module. 

Syntax:

import labelName from '@salesforce/label/labelReference';

Where,

labelName—A name that refers to the label.

labelReference—The name of the label in your org in the format namespace.labelName.

Let us understand with the below example,

Create 2 label as shown below.

customLabelLWC.html

<template>

    <lightning-card title={label.lightningcardname}>

     <lightning-button label={label.buttonnamefromcustomlabel}> </lightning-button>

    </lightning-card>

</template>

  customLabelLWC.js

import { LightningElement } from 'lwc';

import lightningcardname from '@salesforce/label/c.lightningcardname';

import buttonnamefromcustomlabel from '@salesforce/label/c.buttonnamefromcustomlabel';

export default class CustomLabelLWC extends LightningElement {

label ={lightningcardname,buttonnamefromcustomlabel}

 }

customLabelLWC.js-meta.xml

<?xml version="1.0" encoding="UTF-8"?>

<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">

    <apiVersion>54.0</apiVersion>

    <isExposed>true</isExposed>

    <targets>

        <target>lightning__AppPage</target>

        <target>lightning__RecordPage</target>

        <target>lightning__HomePage</target>

    </targets>

</LightningComponentBundle>

Now, add this component to Account page to see the result.