>>11433156"Word" is a term we use when we're talking about the sizes of values that the CPU uses. On x86_64, these are the sizes:
1 byte (8 bits, can represent values from 0 to 255)
1 word (2 bytes, 0 to 65535)
1 double would (4 bytes, 0 to 4294967295)
1 quad word (8 bytes, 0 to 18446744073709551615)
On different architectures, different terms are used, or sometimes the same terms with different meanings. Older architectures had bytes that were smaller than 8 bits, and typically in the context of ISAs, "byte" just means the smallest addressable size of memory, so a byte could be larger than 8 bits as well.