Hero,
A pre chorus is pretty much the same as a bridge. The pre-chorus/bridge/lift (it's known by a number of names) in most cases is the setup for the chorus. Kind of a climb up the hill to get to the chorus. And then of course the chorus would be the culmination of that climb.
"Just the name of the song" ....
The term "Just the name of the song" is truly missing the point and purpose of "just the name of the song". The title (name of the song) is or rather should be the "hook" which in turn is most commonly found in the chorus. The title is the first thing a listener hears or reads about your song. The title is used as a tool to grab the attention of your listener so they "will" listen to your song.
As well, the title in most cases is the "hook" or "punch line" the listener waits for. It's usually found in the chorus.
Sure, using a one line chorus can be killer, like Dylans' 'Shelter From The Storm". And notice the title of the song!

One of the many thing that makes this title very good is Dylan's use of alliteration, "
Shelter From The
Storm". It rolls off the tongue like a tangerine Life Saver.
You should take time and real care in choosing just the right words for your "hook". The hook is where your listener gets paid off for sitting through your song. It should be catchy and easily remembered
Hope this sheds some light for you.
Les