Relationship marketing is the long-term strategy of building strong customer relationships to foster loyalty and repeat business. It involves engaging with customers personally, understanding their needs and preferences, and tailoring marketing efforts to their interests. Engagement, on the other hand, refers to the ongoing interaction between a business and its customers. This can take many forms, such as social media interactions, email campaigns, or customer service interactions. By building strong relationships and engaging with customers regularly, businesses can improve customer satisfaction, increase retention, and drive revenue growth.