Trump-Russian Collusion

What is the difference between:

1. UFOs

2. Bigfoot

3. Ancient Astronauts 

4. Atlantis

and

5. Trump/Russian Collusion?

There is at least some evidence for #s 1-4.

With that in mind, most of what Democrats like Chuck Schumer say is more suited for the 1-2am segment of "Coast to Coast" with George Noory rather than the House floor or the well of the Senate.