can i use entity id instead of node id to load node with node_load() function can i use entity id instead of node id to load node with node_load() function coz
i don't find any difference between entity id and node id . both node id and entity id return same result  

$e_id = node_load($entity_id);
dpm($e_id);
$n_id = node_load($node_id);
dpm($n_id);


both $e_id and $n_id return exactly same result
The node ID is the entity ID for the node entity type.

As they're the same thing, the answer to your specific question can only be "yes".