Just as in English, Italian has a great many compound nouns. Marika explains the different types. A proposito, this time she greets us a new way, saying buondì. It's simply another way of saying buongiorno. Dì is another way of saying giorno (day). Diurno is its relative adjective, meaning "daytime."
Si vous voulez voir cette vidéo et d'autres, commencez notre essai gratuit.