PostgreSQL Packages

I have some query regarding the PostgreSQL installation and its packages. I have installed PostgreSQL 9.5 version for CentOS 7 from this link https://www.postgresql.org/download/linux/redhat/ 

These are the packages which I found post installation ;

I wanted to see the generated files or contents which are associated with these packages. Where can I see the postgresql-runtime packages?? are they separately installed? Can somebody from the support team help me out with this?

Apart from this, I had a query regarding the naming convention followed by PostgreSQL for their client and server packages. For all the server installations, they call it PostgreSQL Server. However, for the client related installations,

they nowhere mention that it is a PostgreSQL client rather they say it as PostgreSQL ( at least for CentOS). what about Ubuntu, Debian, and other installations? Can you throw some light on this ??

Your help is much appreciated.

Thanks,

Rajdeep