practic
Practic (noun) means someone who focuses on doing things rather than on theory.
Etymology
Came from Middle English practic, practik, which drew partly on Old French practique and partly on its source, Late Latin prācticus (“active”). This went back to Ancient Greek πρακτικός (praktikós, “of or pertaining to action, concerned with action or business, active, practical”), from πράσσω (prássō, “to do”). It is a doublet of practico.