advance guard;vanguard*outpost*advance(d money)*(payment)in advance*adventurer*adventuress*emergency...*accident;wreck*AUGUST*air base*air bomb*aircraft designer*airline*, aircraft carrier*air mail*air route*air(craft)...*aviation;aircraft*flying school*perhaps,maybe;  at random*, , AUSTRALIAN*Australia*, , AUSTRIAN*Austria*autobiographic(al)*autobiographic(al)*autobiography*(motor)bus*PL(car)race*autograph*autogiro*car factory,automobile plant*autocracy*highway*automation;slot machine;submachine gun*automatic*automatic*submachine gunner*automobile, motor-car, car*motorist*(motor-)car;  racing car,racer*autonomy*author*authorize*authority*authors*copyright*authorship*fountain pen*(motor,super)highway.*