It depends what folders they are in.
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Core Process Process Description
Csrss.exe1 An essential subsystem that is active at all times. Csrss.exe is the user-mode portion of the Windows subsystem and it maintains console windows and creates or deletes threads. Csrss stands for client/server run-time subsystem.
Services.exe1 The Service Control Manager can start, stop, and pause system services.
Svchost.exe1 A generic process that acts as a host for other processes running from dynamic-link libraries (DLLs). Multiple entries for this process might be present in the Task Manager list. For more information about Svchost.exe, see article 250320, "Description Of Svchost.exe," in the Microsoft Knowledge Base. To find this article, see the Microsoft Knowledge Base link on the Web Resources page at http://www.microsoft.com/windows/reskits/webresources