Yiddish is a language mostly spoken by Jews in the United States, Israel and Russia. But when Jewish prisoners were interned during the Holocaust, the Yiddish language went through a metamorphosis, changing and expanding to include new words about their brutal everyday existence. What emerged and lives on today are words that represent both cultural history and a testimony of survivor resilience. We speak with scholar Hannah Pollin-Galay, whose latest book, “Occupied Words: What the Holocaust Did to Yiddish,” about that “destruction Yiddish.”