Specialization is the process of focusing on a particular AREA or field of study. It involves narrowing down one's focus to a specific NICHE or AREA of expertise. NICHE, with 5 letters, refers to a specialized market or segment of a larger market, while AREA, with 4 letters, refers to a particular geographical region or a field of study. Specialization can be beneficial for those looking to gain a deeper understanding of a certain subject or to become an expert in a particular field.