The Fedora 18 installer does not allow single package installations, instead it prefers to install by package groups. You can also install groups after completing installation. This is especially useful since you can only select one Desktop Environment at installation. Alternatively, to have faster installations, select as few groups as possible and then only install the ones you need later.
This is just a quick note on how yum can install by groups instead of by individual packages.
To see all of the available groups run:
$ yum groups list
Example (abbreviated) output:
Available Environment Groups: GNOME Desktop KDE Plasma Workspaces Xfce Desktop Available Groups: Authoring and Publishing Books and Guides Development Tools
Note: Quotes below are not needed when the group name is a single word, however if the group name has spaces make sure you use quotes.
Pick a group above, example Authoring and Publishing.
To see what packages the group includes, run:
$ yum groups info 'Authoring and Publishing'
To install the entire group, run:
$ sudo yum groups install 'Authoring and Publishing'
To remove the group, run:
$ sudo yum groups remove 'Authoring and Publishing'
Note: Generally removing a group is not recommended, you may remove dependencies which may make your system unusable.