As a noun taxonomy
is the science or the technique used to make a classification.
As an adjective butcherous is
involving butchery, or violent bloodshed.
Butcherous is a synonym of sanguinary.
As adjectives the difference between butcherous and sanguinary
is that butcherous
is involving butchery, or violent bloodshed while sanguinary
) attended with bloodshed.
As a noun sanguinary is
a bloodthirsty person.