pitchy

As a noun taxonomy

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

As an adjective pitchy is

of, pertaining to, or resembling pitch.

As adjectives the difference between pitchy and piceous

is that pitchy is of, pertaining to, or resembling pitch while piceous is of or pertaining to pitch; resembling pitch in color or quality; pitchy.

As an adjective pitchy

is of, pertaining to, or resembling pitch.

As an adverb pitchily is

in a pitchy way.