drowsy

As a verb doze

is to sleep lightly or briefly; to nap.

As a noun doze

is a light, short sleep or nap.

As an adjective drowsy is

inclined to drowse; heavy with sleepiness; lethargic; dozy.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective drowsy is

inclined to drowse; heavy with sleepiness; lethargic; dozy.

As an adjective drowsy

is inclined to drowse; heavy with sleepiness; lethargic; dozy.

As a noun stupor is

a state of reduced consciousness or sensibility.

As adjectives the difference between drowsy and snoozy

is that drowsy is inclined to drowse; heavy with sleepiness; lethargic; dozy while snoozy is sleep-inducing; tedious.