Differance between data table ending with "_" and normal data table?

Summary:

Differance between same data tables but ending with "_" table?

Content (please ensure you mask any confidential information):

Hi Team,

I have a query.

what is the differance between these two data tables"HR_ALL_ORGANIZATION_UNITS_F_" and "HR_ALL_ORGANIZATION_UNITS_F"

Please some one help me to understand what is mean by that ending the data table with "_".

Can some one will explain to understand in easy way.

Thanks,

Malak.

Version (include the version you are using, if applicable):

23C

Code Snippet (add any code snippets that support your topic, if applicable):