What are Custom Labels in salesforce?

Hi,

Custom labels enable developers to create multilingual applications by automatically presenting information (for example, help text or error messages) in a user’s native language. Custom labels are custom text values that can be accessed from Apex classes, Visualforce pages, or Lightning components. The values can be translated into any language Salesforce supports.

We can create up to 5,000 custom labels in an organization, and they can be up to 1,000 characters in length.

Setup | App Setup | Custom Labels | Click ‘New Custom Label’ Button

Thanks.