Elixir Day #Something (because I started again) - Collection Types

So what are the Collection Types?

# List
[ 1, 2, 3 ]
# Tuple
{ 1, 2, 3 }
# Keyword List
[ one: 1, two: 2, three: 3 ]
# Map
{ one: 1, two: 2, three: 3 }

My first question was why Keyword List and Map. They have their differences.

https://stackoverflow.com/questions/28180366/what-is-the-benefit-of-keyword-lists

Speed of read/write access and Keyword Lists ordered, Maps not.