Structured information differentiation in naming techniques are described. In one or more embodiments, first and second collections of structured information are tokenized to generate a first ordered list of tokens that correspond to the first collection of structured information and a second ordered list of tokens that correspond to the second collection of structured information. The first and second ordered list of tokens are inserted into a tree structure in order by assigning tokens from the first and second ordered lists that match in the order to a same node and assigning non-matching tokens to different nodes. The first and second collections of the structured information are tagged by traversing the tree structure such that both the first and second collections of the structured information are tagged using at least one said token that matches and the first collection of structured information is tagged using one or more other said tokens that are different than one or more other said tokens that are used to tag the second collection of structured information.