What's the difference between semantic criticism and critical semantics?

I, like Greene, will engage in what he calls a “critical semantics” here, but I will confront human meanings and purposes with challenges to them posed by the Capitalocene.

I explore how utopian was an extraordinary word that became ordinary, a particular term that became general, and a reference to a physical place that became an idea.

The logic of grafting animal, human, or plant tissue is, in fact, combinatory; its promise is the fantasy of infinite variety. 

Despite or perhaps because of the metaphysical problems of color, early modern writing traffics constantly in it.