carp, cluck, croak, confessの違い

package B;
use Carp qw(carp cluck croak confess);

sub test {
   carp  'this is carp';
#   cluck 'this is cluck';
#   croak 'this is croak';
#   confess 'this is confess';
#   warn 'this is warn';
#   die 'this is die';
}

package main;
B::test();

#         Fatal  Backtrace
#carp       N        N
#cluck      N        Y
#croak      Y        N
#confess    Y        Y

carp	this is carp at t.pl line 14	呼出し元	warn
cluck	this is cluck at t.pl line 6 B::test() called at t.pl line 12	呼出し先	warn
croak	this is croak at line 14	呼出し元	die
confess	this is confess at line 8 B::test() called at line 12	呼出し先	die
warn	this is warn at t.pl line 9.	呼出し先	warn
die	this is die at line 10.	呼出し先	die