I am getting the following error while trying to put one of my custom object related list on Account Detail page.

Content cannot be displayed: 'Application__c' is not a valid child relationship name for entity Account

Here is my vf page

<apex:page standardController="Account">
<apex:relatedList list="Application__c"/>
</apex:page>

 I am able to save the vf page but when I put the page on Account details page, its not showing anything but an error.