Chips is used to enter multiple values on an inputfield.
<div class="card ui-fluid">
    <h5>Basic</h5>
    <p:chips />
    <h5>Unique</h5>
    <p:chips unique="true" max="3"/>
    <h5>Paste (Comma separated)</h5>
    <p:chips widgetVar="wgtPaste" addOnPaste="true" separator=","/>
</div>