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New
General
Language
Business
Biology
Science
Technology
Comparisons [O]
Oughties vs. Noughties
Objectivism vs. Constructivism
Occured vs. Occurred
Onset vs. Offset
Okey vs. Okay
Option vs. Selection
Omega vs. Omicron
Ogre vs. Orc
Observative vs. Observant
Obscure vs. Transparent
Orb vs. Sphere
Outline vs. Layout
Oval vs. Elliptical
Officer vs. Coordinator
Ozonification vs. Ozone
Overture vs. Prelude
Outlet vs. Discharge
Operand vs. Operator
Oval vs. Circle
Oleograph vs. Canvas
Ovary vs. Ovum
Ox vs. Buffalo
Order vs. Anarchy
Occupation vs. Career
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