I play the piano, and also the guitar.
My piano playing is free and loose, and I can effortlessly string together melodies and harmonies, melting chords and melody lines into a polyphonic piece of music.
My guitar playing is a lot stiffer. I can play good rhythm guitar in various styles with barré chords, and I can play nice monophonic melodies, one note at a time.
My playing is harshly divided into these two styles, and I'm not able to merge them. I miss the creative freedom that I enjoy on the piano, where I feel at liberty to mix and match tones as I see fit. I'm not able to move my fingers around in an effective way that leaves me free to do effective, creative improvisation and composition.
What can I do to understand how to actually play the guitar in a dynamic and flowing way, mixing chords and melody lines in a natural and effective way?