Putting these two together creates an unwanted conflict in the design.
Trade Gothic wants to get to the facts, but Bell Gothic wants to have some
fun. This kind of tension is likely not part of the design goal, and should be
avoided.
Now let՚s look at the example on the right. We՚ve replaced Bell Gothic with
the stately Sabon. Sabon, which is a serif typeface, works very well with
Trade Gothic. They are both focused on bold clarity with highly-readable
glyphs due to their tall x-height. Both typefaces, in this context, are on the
same mission, and that makes for a great combination.
Avoid Similar Classifications
Typefaces of the same classification, but from different typeface families,
can easily create discord when combined. Their distinct personalities