Scala provides three primary collection types: List, Set, and Map. Here are the key differences between these collections:

1. List :
   * Ordered collection: Lists maintain the order of elements in which they are inserted.
   * Allows duplicate elements: A List can contain duplicate elements.
   * Immutable: Lists are immutable, meaning they cannot be modified after creation.
   * Can be accessed by index: Elements in a List can be accessed by their index position.
   * Common operations: Lists provide various operations like `head`, `tail`, `prepend`, `append`, and more for manipulating elements.

2. Set :
   * Unordered collection: Sets do not maintain any specific order of elements.
   * Does not allow duplicate elements: Sets automatically remove duplicate elements.
   * Immutable: Sets are immutable, meaning they cannot be modified after creation.
   * Fast element lookup: Sets provide efficient lookup operations for determining whether an element exists in the Set.
   * Common operations: Sets provide operations like `contains`, `intersect`, `union`, `diff`, and more for set manipulation. 3. Map :
   * Key-Value pairs: Maps store elements as key-value pairs.
   * Keys are unique: Each key in a Map is unique, and it is used to retrieve the corresponding value.
   * Immutable: Maps are immutable, meaning they cannot be modified after creation.
   * Fast value retrieval: Maps provide efficient lookup operations to retrieve the value associated with a given key.
   * Common operations: Maps offer operations like `get`, `getOrElse`, `contains`, `keys`, `values`, and more for map manipulation.