I have two types of lists, for example:
First type:
List {
value: cat
value: dog
value: elephant
}
Second type:
List {
key: animal, value: cat
Key: human, value: Mike
Key: bird, value: Dove
}
The first one has just a column (value), but the second one has two columns (key, value).
I'm not sure what should each of both be called, but I call the first one "Single list" and the second one "Double list".
Are these names correct and describes their job?