Laravel 5.1 AuthController Validate and Create - php

Question

I am having trouble in laravel 5.1 registration in the AuthController the validate and create method. I make may login and register forms in one page so I added register- on the inputs of the registration form (ex. register-email for the email address in the registration form). So my validate method in the AuthController is this:
App\Auth\Http\Controllers\Auth
/**
* Get a validator for an incoming registration request.
*
* #param array $data
* #return \Illuminate\Contracts\Validation\Validator
*/
protected function validator(array $data)
{
return Validator::make($data, [
'last-name' => 'required|between:2,35',
'first-name' => 'required|between:2,35',
'register-email' => 'required|email|max:255|unique:users',
'register-password' => 'required|confirmed|min:8',
'register-confirm-password' => 'same:register-password'
]);
}
The last-name, first-name, register-email, etc is a html inputs right? So I think this is right?
and then this is the create method:
protected function create(array $data)
{
return User::create([
'last-name' => $data['last-name'],
'first-name' => $data['first-name'],
'email' => $data['register-email'],
'password' => bcrypt($data['register-password'])
]);
}
The keys in the create method is the database table right? and the value is the html input name/id? I am getting Unknown column error of register-email why is that? I know I don't have register-email column in the database but, in the create method I specify the email column in the database and not register-column which is the html input name of my registration form. Please help.
BTW this is my database migration
public function up()
{
Schema::create('users', function (Blueprint $table) {
$table->increments('id');
$table->string('last-name');
$table->string('first-name');
$table->string('email')->unique();
$table->string('password', 60);
$table->rememberToken();
$table->timestamps();
});
}