Alfisol is a hyponym of luvisol.

As nouns the difference between luvisol and alfisol

is that luvisol is a kind of soil with eluvial horizons from which clay has been leached after snowmelt or heavy rains and illuvial horizons in which clay has been deposited while alfisol is an abundant soil order in the USDA soil taxonomy, with a clay-enriched subsoil and relatively high native fertility, widely used both in agriculture and forestry.