petrochemical

As nouns the difference between taxonomy and petrochemical

is that taxonomy is the science or the technique used to make a classification while petrochemical is (chemistry) any compound derived from petroleum or natural gas.

As an adjective petrochemical is

of or pertaining to the such compounds, or the industry that produces them.

As adjectives the difference between petrochemical and nonpetrochemical

is that petrochemical is of or pertaining to the such compounds, or the industry that produces them while nonpetrochemical is not petrochemical.

As a noun petrochemical

is any compound derived from petroleum or natural gas.