The difference between SELECT ANY DICTIONARY and SELECT_CATALOG_ROLE

I've seen some DBAs confused about these two "privileges" or "roles".

SELECT ANY DICTIONARY is a System Privilege.

SELECT_CATALOG_ROLE is a Role you would see in DBA_ROLES.  However, querying DBA_SYS_PRIVS does NOT show what privileges are granted to this role.

SELECT_CATALOG_ROLE predates the SELECT ANY DICTIONARY privilege.

The SELECT ANY DICTIONARY privilege grants Read access on Data Dictionary tables owned by SYS.  The SELECT_CATALOG_ROLE role grants Read access to Data Dictionary (DBA_%) and Performance (V$%) views.