Cluster analysis is a popular statistical technique used to group similar items or observations based on common characteristics. Synonyms for cluster analysis include cluster detection, cluster modeling, and cluster segmentation. Another term for cluster analysis is cluster-based data analysis, which refers to the process of identifying and analyzing groups of related data points. Other related terms include cluster evaluation, which is the process of assessing the accuracy and reliability of cluster analysis results, and cluster validity, which refers to the effectiveness of cluster analysis in determining meaningful or relevant clusters. Regardless of the name or variation used, cluster analysis remains a powerful tool in data science and market research.