It’s like an irritating fly buzzing around your head – “Big Data”. Do I have to hear the term one more time? As a Data Scientist who interacts with hard data problems on a daily basis, the term, “Big Data”, has little meaning to me since it lacks any precise definition or structure, the normal comfort food for my mathematical mind. However, I appreciate that the term is “out there” and people who are trying to make sense of the mess of data flowing towards them are searching for a common Language to discuss their specific challenges. I hope to help by explaining some of the key language circulating around Big Data concepts – the next level of detail in the Big Data discussion.