The document discusses terminology related to measuring quality of life, well-being, and happiness. It notes that while terminology is still evolving, there is general agreement that these concepts broadly encompass life satisfaction, relationships, purpose, and health. Both objective metrics like life expectancy and subjective surveys are important to get a balanced picture. Common categories of well-being metrics discussed include those from positive psychology, governments, businesses, and crowdsourcing. Key metrics examined include life satisfaction surveys, composites indexes, sustainability reporting, and experience sampling apps.