Context: Although colloquially Delhi and New Delhi as names are used interchangeably to refer to the jurisdiction of NCT of Delhi, these are two distinct entities, and the latter is a small part of the former.

Question: What are the two terms colloquially used to refer to the jurisdiction of NCT of Delhi?
Answer: Delhi and New Delhi

Question: New Delhi is a small part of what larger territory?
Answer: Delhi

Question: Delhi and New Delhi are colloquially used to refer to what jurisdiction?
Answer: NCT of Delhi

Question: What is one name used to refer to the jurisdiction of NCT of Delhi?
Answer: Delhi