What is the difference between ceilMinute and ceilMinutes in PHP Carbon?

In the Carbon.php source file that comes with Laravel 8 it shows

 * @method        $this               ceilMinute(float $precision = 1)                                                     Ceil the current instance minute with given precision.
 * @method        $this               ceilMinutes(float $precision = 1)                                                    Ceil the current instance minute with given precision.

Basic testing shows that given input "2021-11-26 11:25:10.000000", both functions round it up to "2021-11-26 11:26:00.000000".

And I want to know is there any difference between these two functions?

Any help would be appreciated.

source https://stackoverflow.com/questions/70303989/what-is-the-difference-between-ceilminute-and-ceilminutes-in-php-carbon