Man I really wish I could go on a cruise ship
So do I! Cruise ships and cruise liners are awesome.
Is there a difference between a cruise ship and a cruise liner?
Nah, cruise ships and cruise liners are just synonyms. 
Oh I see, guess it would be a bit weird to have two different types of things. But have you ever been on one?
I've never been on a cruise ship or cruise liner, honestly. I really want to though.