Why this word is great
EXCAMBION — [Noun] The exchange or barter of lands or property. From Late Latin excambium, from Latin ex- ("out of") + cambium ("exchange"). Unlike "barter" (which encompasses goods and services) or "commutation" (which implies substitution of terms), excambion is the precise, legal dance of trading deeds—acre for acre, pasture for pasture. It is the feudal lord trading a waterlogged meadow for a sun-baked hillside, the farmer handing over his ancestral plot for a parcel nearer the mill, the silent transfer of deeds that redraws boundaries without disturbing a single stone. A transaction as old as fences, and as inevitable as the shifting of roots beneath them.