quick          'kwik
Etymology: Middle English quik, from Old English cwic; akin to Old Norse kvikr living, Latin vivus living, vivere to live, Greek bios, zOE life
Date: before 12th century
1 : not dead
2 : acting or capable of acting with speed
3 : reacting to stimuli with speed and keen sensitivity
4 : done or taking place with rapidity

       quark          'kwork, 'kwrk
Etymology: coined by Murray Gell-Mann
Date: 1964
1 : any of several elementary particles that are postulated to come in pairs of similar mass with one member having a charge of + 2/3 and the other a charge of 1/3 and are held to make up hadrons