Use active verbs or phrases for labels (i.e. delete or cancel)
Don't use vague and generic labels (i.e. yes or no)
Button Group Uses
Primary button should always be first if buttons are stacked
In a small window or card: Primary button should always be on the right if buttons are inline
In a full page window or card: Primary button should always be on the left if buttons are inline
If only using one button, use the filled primary button
If using two buttons, use filled as the primary button and either outline (same color as filled) or text button for secondary
If using three buttons, use filled as primary, outline as secondary, and text as tertiary (unless third button has same hierarchy, then can use two outline buttons)