How to call a method dynamically in Elixir, by specifying both module and method name?

I'd like to know what exactly a method name is in elixir:

array = [1,2,3]
module_name = :lists
method_name = :nth                  # this not working
module_name.method_name(1, array)   # error, undef function lists.method_name/2
module_name.nth(1, array)           # returns 1, module_name is OK. It's an atom

But I can do almost the same thing in erlang:

A = [1,2,3].
X = lists.
Y = nth.
X:Y(1,A).  #  returns 1

How can I do this in elixir?