Greetings, student! Today, we're studying the Map data structure in Kotlin. It functions like a dictionary, pairing a unique key with a corresponding value. Our primary focus will be on creating, accessing, and utilizing the unique properties of Maps in Kotlin.

In Kotlin, a Map stores key-value entries. Consider a dictionary, where words are keys, and definitions are values. This analogy parallels a Map's functioning: keys are unique, just as no two words share the same meaning.

In Kotlin, mapOf() and mutableMapOf() are functions designed for creating Maps, collections of key-value pairs. For mutable maps, you can insert or modify a key-value pair using the syntax map[<key>] = <value>. Modifying an existing key updates its associated value.

This example demonstrates not only how to define immutable and mutable maps but also how to dynamically add elements to mutable maps and modify existing entries.