The Microsoft Office Suite is all of the Office programs as a whole.
So… it’s the same thing.
The Suite (I have ProPlus 2013) includes Word, Excel, Outlook, Access, OneNote, Lync, Publisher, and PowerPoint.
Most of the time, if you’re looking for a job and they want “Microsoft Office Proficiency”, they’re usually talking about Excel, Word, and Outlook, and occasionally Access.