In computing|lang=en terms the difference between pair and deduplication
is that
pair is (computing) to form wireless connection between to devices while
deduplication is (computing) the elimination of redundant duplicate data.
As nouns the difference between pair and deduplication
is that
pair is two similar or identical things taken together; often followed by of while
deduplication is (computing) the elimination of redundant duplicate data.
As a verb pair
is to group into sets of two or
pair can be (obsolete) to impair.