[{"Bold_text": "noun", "List Items": ["bread spread with butter.", "a basic means of support; source of livelihood; sustenance:The automobile industry is the bread and butter of many Detroiters."]}, {"Bold_text": "adjective", "List Items": ["providing a livelihood or basic source of income; supplying the basic needs of life:a bread-and-butter job; the agency's bread-and-butter account.", "of or relating to basic needs:housing and other bread-and-butter political issues.", "basic or everyday; staple; routine.", "expressing thanks for hospitality:a bread-and-butter letter."]}]