Get normal an custom posts in one stream

Hello,

I would like to get certain normal posts together with certain custom posts. Currently i get them via:

<?php
                    $args = array(
                        'category_name' => 'work, travel',
                        'posts_per_page' => 100
                    );
                $query = new WP_Query($args);
                ?>

AND

<?php
                $args = array(
                    'post_type' => array(LEXICON, EVENT),
                );
                $custom_query = new WP_Query($args);
                ?>

seperately. What is the best way to get one stream with the categories work, travel as well as the categories EVENT, LEXICON merged together?

Thank you in advance!