Don't try and sound more clever than you are:

Lexical Expression is a silly name for the exhibition.
Sounds like it's trying to be too clever.  True- the
words reflect what it entails, however, the audience
should not be alienated.  And this is alienating.


New name   - Verbal Minds.

Brand it.

Colophon type brilliance have come up with this: 

In context:

Too open - kerning needs tightening in a lot of areas.

A coupling of:

Together, these two typefaces appear confident in personality 
and professionalism.  'CENTRAL Ave' is powerful and proud- 
specifically with its long stems in the letterform 'R', whilst 
'Helvetica Neue bold' brings an accessible and well known feel- 
which encourages an audience who perhaps might not trust 
the content.

So, for example