None, both names mean the same thing. Machu Picchu Citadel, also known as the Main City of the Incas, Machu Picchu, La Llaqta, The Lost City of the Incas or archaeological zone. It is an architectural complex known worldwide for its admirable ruins, considered one of the 7 wonders of the modern world, mainly for the beauty of its architecture, the imposing and fine stonework of its constructions, the carvings on the rocks, the tombs and mausoleums stand out that are located on the margins of this path.
This experience already includes the guided tour and entry included on day 3 of the itinerary* (the day on which this activity takes place is subject to change*).