Since we all enjoy linguistics so much, let me throw in another, uh, 'curve'.
Again, travelling through these states these past months, in Montana we drove through the Absaroka Range of mountains. I was curious to know what the word meant. We are in regions of the Crow tribe, and learned that Absaroka apparently was a Hidatsa (tribes to east of here in Dakotas) word for 'children of the big beaked bird' which also I have seen as curved beak.
This could mean either raven or crow if used indiscriminately, as often occurs in transliterations and descriptions cross linguistically.
These two birds are of the genus 'corvus' which seems to mean curved as well, and wonder if the term applies to the beak of these, even though the raven has the more curved.
If this is the case, then although 'corvus' means curved in Spanish, perhaps the meaning might have been extended to the avian meaning as it seems to be in some other instances.
A quandary indeed.