well, that's a big question. Names mostly comes from shape, sometimes from local (like a machete vs. a parang).
Im sure there are books out there with nice diagrams too. that's how I learned.
http://www.knife-depot.com/knife-information-112.html...
Does it have to be buckeye? I have lots of other stuff if you need something.
redwood, maidou, bog oak, gidgee, and some other stuff.
I can send stuff out starting Monday.