button - noun

a round fastener sewn to shirts and coats etc to fit through buttonholes

an electrical switch operated by pressing

any of various plant parts that resemble buttons

a round flat badge displaying information and suitable for pinning onto a garment

a device that when pressed will release part of a mechanism

any artifact that resembles a button

button - verb

• provide with buttons
• fasten with buttons

button - thesaurus

push   release