When the other person does it, you call it "lying," but when you tell the cop, "I know I wasn't speeding," you're just bending the truth a bit—good business, you know.  When you falsified your resume when you applied for a job, inflating your salary for previous jobs and expanding your educational background (who is going to call the school and check on the years you were there?), you cloaked it in a term which has become widely used—misinformation.  Besides, stretching the truth serves your purpose and you get away with it, so what?