Difference between Kie Server, Business Central and Kie Workbench?

I am fresh to jBPM.

I have successfully created and deployed a Business Process using solely Business Central (KIE Workbench). I have not directly used Kie Server.

I desired to distinguish between Kie Server and Business Central.

Can Business processes, rules, etc. be created and deployed without Business Central (KIE Workbench)?