What is a button label?
Button labels inspire the users to take an action. To indicate what a button will do, use the function as the label of the button. When users read the button labels like Save, Preview, and Publish, they know exactly what the button will do when pressed.
How many words should a button have?
Button Text Shouldn't Go On and On and On
Considering that, it may be tempting to stretch out your button text, but that'd be a bad move. Ideally you'll want to keep that button text to two or five words.