A 'dict' is a built-in Python data type that stores key-value pairs. Each key must be unique and immutable, while values can be of any data type.
Key: An immutable element used to identify values within a dictionary. Keys must be unique within a single dictionary.
Value: The element associated with a specific key in a dictionary. Values can be of any data type and can be duplicated.
.get() method: A method used to retrieve the value associated with a specified key from a dictionary. It allows for an optional default value if the key is not found.