Functionally and Workable

adverb

• With respect to function.
  • usage: "the two units are functionally interdependent"

(adv.) In a functional manner; as regards normal or appropriate activity.

adjective

• Capable of being done with means at hand and circumstances as they are.
  • synonyms: feasible, executable, practicable, viable

(a.) Capable of being worked or worth working; as, a workable mine; workable clay.