And spelunker is such an ugly word. Caver comes out of the mouth from the back of the mouth and then opens up in the middle and then with the "v" becomes, only then, a mouth word. Spelunker is clunky--and sounds kind of silly. Caver moves from back to front--air moving from back to front--like a beckoning hand from inside the cave working its way toward your consciousness. Can't you feel that airy hand asking you to enter? Spelunker doesn't do much other than sound like a stupid rare word--it kind of hobbles about on its syllables--clunketyclunketyclunketyclunk. Sounds like one of those little coal cars in a cave clunking along with spiked-out cargo.

Just my take,
WordWooed