You can use the other features by utilizing the jrBanned_is_banned() function.
Take this example from the jrComments module. It wants to check if the word is in the banned words list for the comment text, but doesn't want to require that the jrBanned module be active for the comments module to work.
So the
jrCore_run_module_function() is used. The
jrCore_run_module_function() is a way to say "If the module is active, then run this function."
Here is the code from the jrComment module that checks to see if the Banned module exists, and if it is
//do something
if ($ban = jrCore_run_module_function('jrBanned_is_banned', 'word', $_post['comment_text'])) {
}