@justycjay,
As I understand it:
Epistemological pragmatism....the doctrine that "what we know" is about "what works" in terms of prediction and control. There is no claim for the ontological status (independent existence) of "concepts" like "atoms" or "genes" etc., and such concepts are open to continuous paradigmatic revision.
Linguistic pragmatism...the doctrine that "meaning" (status) of the elements of a language depend on the
communicative functionality of those elements rather than corresponding to "aspects of an external reality". (i.e neither ontology or epistemology). It is a holistic doctrine in the sense that the "meaning" of a subcomponent ("word" for example) is dependent on a succession of nested linguistic contexts theoretically encompassing the "whole language".