On the other hand, sometimes I think there is no word in English for a concept, and I find I'm mistaken. I didn't know English had a word to describe a pattern of stars that is not a constellation - asterism. I came across the word from a link on Coyote Prime's blog.
This is going to be a useful word to me, because here in the Southern Hemisphere we tend to notice a part of Orion that looks like a pot. Now I'll be able to call it an asterism.
Here's a blog entry by a visitor from the Northern Hemisphere: