parallelism

noun

1. The state or condition of being parallel; agreement in direction, tendency, or character.
2. The state of being in agreement or similarity; resemblance, correspondence, analogy.
3. A parallel position; the relation of parallels.
4. (grammar) The juxtaposition of two or more identical or equivalent syntactic constructions, especially those expressing the same sentiment with slight modifications, introduced for rhetorical effect.