If you want to display only a list of packages that have been installed and (installed) or is in the repos, but have not yet installed (available), one can do so by typing yum list installed or trailing available.
To display a list of packages that are installed on a machine (installed), or in the repos, but not yet installed (available) either. Can be installed or available on the type yum list.
If you want to display a list of packages being installed into the air (installed) or in the repos but not yet installed (available). One can be done by printing installed or available trailing Yum list.