I was thinking about something today. I find it to be a very complex situation that would probably never happen, but it is possible. When talking about colors. We know these as GREEN RED BLUE ORANGE, correct? But what if someone saw GREEN as GREEN. Like the blue that we know, they would call green. I suppose when learning about language and what words mean what, we really have to trust who is teaching them to us. From a young age it is very easy to manipulate what a child learns. Humm. A little odd to think about.
Another thought. Trying to describe color to a blind person. Try it, really, it's damn near impossible without referring to another object. Cause keep in mind. They cannot see.