All of the following are contained in the locale setting of the operating system EXCEPT:

The currency symbol is part of the `LC_MONETARY` locale category, defining how monetary values are displayed.

Language is a primary component of the locale, specified by `LC_MESSAGES` and `LANG` variables, affecting messages, menus, and text display.

The timezone setting determines the local time and daylight saving rules for a system, and it is configured separately from the locale. While related to regional settings, it is managed through specific timezone configuration files and commands rather than being part of the standard locale categories.

The thousands separator is part of the `LC_NUMERIC` locale category, which dictates how numbers are formatted, including decimal and grouping separators.