I have always extended this with the acronym "VAN". (I remind myself that programming is like driving a van.)

Verb Adjective Noun

"Enter New Customers" better than "Custs"

"Pay All Bills" better than "Accts Payable"

"Download Changed SKUs" better than "SKU Update"

You get the idea.

Not just for buttons, but for everything, even the stuff the user never sees.

So simple, yet so elusive.