ENTER

To come or go into

Example: "The boat entered an area of shallow marshes"

Become a participant; be involved in

Example: "Enter a race"

Register formally as a participant or member

Example: "The party recruited many new members"

Be or play a part of or in

Example: "Elections figure prominently in every government program"

Make a record of; set down in permanent form

Come on stage

Take on duties or office

Example: "Accede to the throne"

Put or introduce into something

Example: "Insert a picture into the text"

Set out on (an enterprise or subject of study)

Example: "She embarked upon a new career"