> ...which leads to another thought, not unrelated. How many words in current usage in the English language have their
origins in Yiddish?

In England (London especially) 'Nosh' is a Yiddish word for food. Used mostly by Cockneys it was borrowed from the many Jewish immigrants in London at the end of the last century (we haven't reach the end of the 20th century yet - if anyone wanted to take me up on that point)

There are a few others but, for the life of me, I can't think of them.