What is the difference between a regular array and an associative array in JSON?

In JSON, a regular array is an ordered list of values indexed by numeric indices, for example:

["apple", "banana", "cherry"]

An associative array in JSON is represented by an object — a set of "key-value" pairs, where keys are strings and values can be any JSON types:

{"name": "Ivan", "age": 30}

Thus, a regular array is a list of elements in order, and an associative array (object) is a collection of named values.