What is the term for 4 bits grouped together?

The term for 4 bits grouped together is "nibble." A nibble is a half-byte, and since a byte consists of 8 bits, it makes sense that 4 bits makes up a nibble. Understanding this foundational concept is important because it helps in comprehending data storage, processing, and representation in computing.

For context, a byte, which consists of 8 bits, is a basic unit of data in computing, while a bit is the smallest unit, representing a binary state (0 or 1). A word typically refers to a set number of bits that a processor handles as a single unit, which can vary (commonly 16, 32, or 64 bits) depending on the architecture. Thus, the term that specifically describes a grouping of 4 bits is, without doubt, a nibble.