Consumer Behavior: The study of how individuals, groups, and organizations select, buy, use, and dispose of goods, services, ideas, or experiences to satisfy their needs and desires.
Buyer Decision Process: The process consumers go through to identify a need, gather information, evaluate alternatives, make a purchase decision, and post-purchase evaluate their decision.
Segmentation:The process of dividing a market into distinct groups of consumers with different needs, characteristics, or behaviors who might require separate products or marketing mixes.