Read the following question and then pick a category that describes the question.
Question: What format was VHS 's main competition ?
What category is the question in? Choose one from Abbreviation, Entity, Description and abstract concept, Human being, Location, Numeric value. Respond with only the category and no additional text.
Entity
Description and abstract concept. (The main competition for VHS was Betamax, but the question asks for the format of Betamax, so