Buttons communicate users that they can take actions. Their text label should remain on a single line, never wrapping the text.
https://invis.io/P4X2U51QE5W#/415641987_Button_Anatomy
https://invis.io/ETX2TDFGNBK#/415636132_Solid_Button
https://invis.io/5BX2UCNSE3R#/415638906_Outline_Button
https://invis.io/RAX2UE3WPSM#/415639228_Text_Button
https://invis.io/4YX6WKUCXNH#/416745797_Grouped_Buttons