Conversation so far:
Did Maurice Merleau-Ponty create art?
Merleau-Ponty distinguishes between primary and secondary modes of expression in art.
What are the distinctions between his thoughts on art?
This distinction appears in Phenomenology of Perception (p. 207, 2nd note [French Edition.]).
What is repeated on Maurice Merleau-Ponty's thoughts of art?
The distinction between primary and secondary modes of expression is sometimes repeated in terms of spoken and speaking language.

Question: What are these modes of expression?
Self-contained rewrite: What are Maurice Merleau-Ponty's modes of expression?