Close down and Simmer down

Close down verb - Cease to operate or cause to cease operating.

Simmer down and close down are semantically related. In some cases you can use "Simmer down" instead a verb "Close down".

Simmer down verb - Become quiet or calm, especially after a state of agitation.

Close down and simmer down are semantically related. Sometimes you can use "Close down" instead a verb "Simmer down".