If you want to rename the WordPress dashboard admin menu item name with the name you like for any reasons then use this simple code snippet to accomplish that.
/* Advanced Scripts Method to Add This Snippet */
function my_text_strings( $translated_text, $text, $domain ) {
switch ( $translated_text ) {
case 'Posts' :
$translated_text = __( 'Articles' );
break;
}
return $translated_text;
}
add_filter( 'gettext', 'my_text_strings', 20, 3 );