What are the Importance of idiomatic expression?

What does belle soiree mean? What is the abbreviation of Monsieur? What is the term for the ending of a friendly letter? How to address invitation to person don't know if married? What is dignity and respect? Why do people have to fluff up a duvet to keep warm? Why does a country need etiquette or norm? How can you speak to someone in reference to a problem to your shoes? What does bonjour quoi de neuf mean? Can you give me a sentence of untidy? What is the female version of earl? Can you give me a sentence using the word etiquette? Following can result from U.S. personnel failing to respect human rights or failing to convey the importance of respect for human rights to host nation personnel? What does the saying you scratch my back I'll scratch yours mean? What does 'Put your best foot forward' mean? Is Ms the abbreviation for Mrs? How do you improve the punctuality in a work place? What is the meaning of the idiom the bee had a part time job in people's bonnet's? When entering a doorway does the man or the woman go first? Why was the chauffeur the only one dressed black?