Returns the node type name of the passed node or node type string.
$node: A node object or string that indicates the node type to return.
The node type name or FALSE if the node type is not found.
function node_type_get_name($node) {
$type = _node_extract_type($node);
$types = _node_types_build()->names;
return isset($types[$type]) ? $types[$type] : FALSE;
}