Functioning and Operational

noun

• Process or manner of functioning or operating.
  • usage: "the power of its engine determines its operation"; "the plane's operation in high winds"; "they compared the cooking performance of each oven"; "the jet's performance conformed to high standards"
  • synonyms: operation, performance

verb

• Perform as expected when applied.
  • usage: "The washing machine won't go unless it's plugged in"; "Does this old car still run well"; "This old radio doesn't work anymore"
  • synonyms: function, work, operate, go, run
• Serve a purpose, role, or function.
  • usage: "The tree stump serves as a table"; "The female students served as a control group"; "This table would serve very well"; "His freedom served him well"; "The table functions as a desk"
  • synonyms: serve, function
• Perform duties attached to a particular office or place or function.
  • usage: "His wife officiated as his private secretary"
  • synonyms: officiate, function

adjective

• Performing or able to perform its regular function.
  • usage: "a functioning flashlight"

adjective

• Pertaining to a process or series of actions for achieving a result.
  • usage: "operational difficulties"; "they assumed their operational positions"
• Fit or ready for use or service.
  • usage: "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order"
  • synonyms: functional, usable, useable, operable
• Military) of or intended for or involved in military operations. (
• Being in effect or operation.
  • usage: "de facto apartheid is still operational even in the `new' African nations- Leslie Marmon Silko; "bus service is in operation during the emergency"; "the company had several operating divisions"
  • synonyms: in operation, operating