Similarity
Definition
Used when: one or more similarities between Arg1 and Arg2 are highlighted with respect to what each argument predicates as a whole or to some entities it mentions.
i.e. This is similar to That
Examples
(1) A: We could use it to communicate underwater.
(2) B: Like dolphins.
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(2) -- Similarity --> (1)
B highlights the similarity between the communication method described by A and the way dolphins communicate underwater.