push @Names, $names{$_}{realname}
  foreach keys %names;

##</code><code>##

push @Names, $_->{realname}
  foreach values %names;

##</code><code>##

my @Names = map { $_->{realname} } values %names;

##</code><code>##

%hash       # The entire hash        is a hash.
$hash{key}  # An element of the hash is a scalar.