In "Article" content type i have three view mode in "Manage Display" namely "teaser", "default" and "abc".
Similary in "Comment Display" i have two view mode namely "defalut" and "xyz".
Eg: When i see "abc" node page where i am listing comments, that time the comment should be display with my "xyz" view mode not the "default" one.
function custom_node_view($node) { return node_view($node, 'abc'); }