The idea is that the name is distinct enough and not in common use in the sector it's intended for. With a trademark, you should be able to use it to uniquely identify a particular product over another.
Taking my previous example, you couldn't trademark "Headache pill" because loads of other pharmaceuticals make them.
This is a pretty good explanation of what I'm trying to say.
Taking my previous example, you couldn't trademark "Headache pill" because loads of other pharmaceuticals make them.
This is a pretty good explanation of what I'm trying to say.