hold, keep (to a limit), suffice / retain, keep, remain / detain, keep, retain

please give me / (expressing a request) please do something for me

Please do (action)

Please do not (do)

a button (clothing) / a button (mechanical device)

please give me / (polite, imperative) please do something for me; expressing a request

a shirt / an undershirt, a vest

buttonhole (hole for a button)

(computing, graphical user interface) Start button

reset button