This document discusses key concepts from Toyota's lean production system (TPS). It provides definitions and examples of 11 Japanese terms from TPS that can be applied to improve production and lean processes. These include jidoka (automation with human intelligence), pokayoke (mistake proofing), andon (visual signals for problems), muda (waste), and kaizen (continuous improvement). The document also discusses lean thinkers like Taiichi Ohno, W. Edward Deming and how their work influenced Toyota and lean manufacturing. Overall it presents an overview of lean principles and their origins at Toyota that readers can apply to gain a better perspective on lean.