Are Tawaf al-Sadr and Tawaf al-Wadaʿ two separate obligatory tawafs?

Book of Hajj: Farewell Tawaf, Muhassab and Departure from Makkah

• Yes, each requires seven separate circuits
• Yes, one occurs at Safa
• Yes, one occurs only at Muzdalifah
• No, they are two names for the same tawaf