I get the usage as a dig at do nothing office jobs, but what are these jobs really? I've never worked in an office or known anyone who did well enough to ask.
So what are these jobs actually like? How do they exist in the first place? Could I lie my way into getting one lol?
The other comments give good examples. A project is essentially something that a group wants to accomplish. It can be work related, but it can be in activist, volunteer, or other groups as well.
Examples: fulfilling a scientific grant to discover or develop a new technology, development of an app, construction of a new grocery store, running a clinical trial, environmental restoration of a damaged forest, putting together a labor organization workshop...really any project that is big enough that it needs to be broken down into smaller parts and would be difficult for the group doing the work to accomplish without someone taking on a role that specifically monitors the larger picture.