Separate categories for post types

You can create custom post type by following example code:

function ts_post_type_test() {    register_post_type( 'Test',                array(                 'label' => __('Test'),                 'public' => true,                 'show_ui' => true,                'show_in_nav_menus' => false,                'menu_position' => 5,                'capability_type' => 'post',                'texonomies' => array('category'),                'supports' => array( 'title','editor','thumbnail'),                )     );}

the wordpress site link :http://codex.wordpress.org/Function_Reference/register_post_type

For the Create separate category for particular post use following link:

http://codex.wordpress.org/Function_Reference/register_taxonomy

Example code:

register_taxonomy('name of taxonomy', 'post name',array("hierarchical" => true,"label" => "Label Category","singular_label" => "label of taxonomy",'update_count_callback' => '_update_post_term_count','query_var' => true,'rewrite' => array( 'slug' => 'slug name of new registered taxonomy', 'with_front' => false ),'public' => true,'show_ui' => true,'show_tagcloud' => true,'_builtin' => false,'show_in_nav_menus' => false));