This document discusses key concepts in interpersonal communication and relationships. It defines interpersonal communication as using messages between two or more people to generate shared meaning, allowing for speaking and listening. Interpersonal relationships are associations between interdependent people who have interacted over time. Relationships can be complementary, with each person supplying what the other lacks, or symmetrical with highly similar participants. Conflict is normal in relationships and effective conflict management involves remaining calm and avoiding exaggeration. The document also covers self-disclosure, friendship, stages of relationships, motivations, cultural differences, compliance gaining, and downsides like obsession and abuse.