Ruby's alias_method is method. but how about alias? : i know that Ruby's alias_method is method. but how about the alias?

i checked on [ruby-doc](http://ruby-doc.com).

when i search the "alias_method", there're results like `Class: Module (Ruby 2.x.x)`

but in alias, there's no result like `Class: Module (Ruby 2.x.x)`

i know the differences between them, in usage-level. i just want to know whether` alias` is method or not

