A homophone is a group of words that sound alike but they have different meaning or spelling or derivation.  A lot of people get the spelling of these words confused or simply ignore the correct spelling because they sound the same anyway.  If anything, being on social networks has showed us that many people do not know the difference between each word. This irritates Grammar Gurus who immediately let you know that you have made a mistake.  Take the quiz and check to see if you understand the difference between your, you’re, their, there, they’re, its, and it’s.