|Description: A. Characterization of singular objects or events instead of giving a name. As opposed to names descriptions are not rigid, i.e. they may refer to different objects in different worlds. - B. Linguistic form for attributing predicates according to the perceptions of objects. See also rigidity, theory of descriptions.|
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Name/Identification/Necessary/Metaphysically possible /Epistemic/Kripke/Peacocke: E.g. assumed one could fix the reference of the name Bright by the fact that it intended to refer to the man who invented the wheel. Kripke: then still the statement is true: "it is possible that Bright has never invented the wheel".
Possible world/Description/Peacocke: there is no specific individual relation between the use of the expression "the F" and the thing which is F - ((s) otherwise certain aspects would be a priori) - - identity between worlds/Peacocke: even in quite similar worlds identity is a relation for itself - identity between relations to the perceiving subject in various worlds: pointless to claim.
Chr. R. Peacocke
Sense and Content Oxford 1983