What word means the same as volume?

There isn't one single word that means *exactly* the same as "volume," as the meaning of "volume" depends on the context. Here are some words that can be used as synonyms depending on the situation:

For physical volume:

* Capacity: The amount a container can hold.

* Size: The extent of something in three dimensions.

* Bulk: The largeness of something.

* Dimensions: The measurements of length, width, and height.

For sound volume:

* Loudness: The intensity of a sound.

* Amplitude: The magnitude of a sound wave.

* Intensity: The power of a sound wave per unit area.

For book volume:

* Book: A bound collection of printed pages.

* Tome: A large, heavy book.

* Edition: A particular version of a book.

For general volume:

* Quantity: The amount of something.

* Amount: The total number or quantity.

* Magnitude: The size or extent of something.

The best synonym for "volume" will depend on the specific context in which it is being used.