There isn't a single universally accepted alternative name for the entire physical universe. However, here are some options that are used in different contexts:

* Cosmos: This is a popular alternative, often used in a more poetic or philosophical sense. It emphasizes the order and harmony of the universe.

* The Universe: While not technically another name, this is the most common and straightforward term.

* The Macrocosm: This word emphasizes the vast scale of the universe and contrasts it with the microcosm, which refers to the smaller world of individual organisms or systems.

* The Great Void: This is a less common term, often used in a more existential or philosophical sense. It emphasizes the vastness and emptiness of space.

Ultimately, the best "alternative" name depends on the context and the specific aspect of the universe you want to emphasize.