Close in and Lock up

Close in verb - To come near or nearer.

Lock up and close in are semantically related in confine topic. In some cases you can use "Lock up" instead a verb "Close in", when it comes to topics like enclose, incarcerate, surround, hold in enclosure.

Lock up verb - To put in or as if in prison.

Close in and lock up are semantically related in confine topic. Sometimes you can use "Close in" instead a verb "Lock up", if it concerns topics such as enclose, incarcerate, surround, hold in enclosure.