I only mean to say that I personally have only heard the dialectical buzzwords in the context of Marxism. If other's use it, it's news to me.
Well Hegel coined the 'dialectic' as far as I know. They call it the 'Hegelian dialectic'. But he meant it only as the progress of ideas. Marx applied it to material world and decided it was not ideas but economic classes that were fighting it out.