Accuracy :: Accuracy (n.) The state of being accurate; freedom from mistakes, this exemption arising from carefulness; exact conformity to truth, or to a rule or model; precision; exactness; nicety; correctness; as, the value of testimony depends on its accuracy..
Inaccuracy :: Inaccuracy (n.) The quality of being inaccurate; want of accuracy or exactness.
Inaccuracy :: Inaccuracy (n.) That which is inaccurate or incorrect; mistake; fault; defect; error; as, in inaccuracy in speech, copying, calculation, etc..