In the era of information explosion, the terms "Big Data" and "Data Science" have become ubiquitous, often used interchangeably. However, these are distinct concepts with unique roles and purposes in the realm of data analytics. This article aims to dissect and highlight the key differences between Big Data and Data Science, shedding light on their individual significance and contributions to the data-driven landscape. Additionally, it will explore the growing demand for professionals skilled in both areas, emphasizing the importance of pursuing a comprehensive Data Science courses to navigate the intricacies of handling vast datasets and extracting valuable insights in today's data-centric world. Big Data Defined Big Data refers to the vast and complex sets of data that traditional data processing tools are ill-equipped to handle. It encompasses the three Vs - Volume, Velocity, and Variety. Volume relates to the sheer size of the data, Velocity to the speed at