Better than what?
Please, stop spamming us with unformed questions and demanding "better" answers than something you have not told us about.
A label in Jira is a way to organize Jira issues. It is rather a flexible way to organize issues. You can create any value you like for the field just by typing it out, and issues can have multiple values for this single field. There is also more information on what this does and how to use it in Labeling an Issue.
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