Parallel
Parallel adjective - Having qualities in common.
Usage example: parallel lives of two friends who first met in college
Twin is a synonym for parallel in equivalent topic. In some cases you can use "Twin" instead the word "Parallel" as a noun or an adjective or a verb, when it comes to topics like counterpart, complement. popular alternative
Twin
Twin noun - Either of a pair matched in one or more qualities.
Usage example: I've found one sock but can't find its twin
Parallel is a synonym for twin in corresponding topic. You can use "Parallel" instead the word "Twin" as an adjective or a noun or a verb, if it concerns topics such as duplicate. popular alternative
Mutual synonyms
How words are described
Both words in one sentence
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Casey and Andy has an entire parallel universe of Hackneyed Opposites, most notably Quantum Crook, the evil twin and nemesis for Quantum Cop.
Source: Evil Twin - Introduced in the fifth chapter, she is a spirit that is opposite but mostly identical to her 'twin' that follows a different set of rules and has a parallel goal.
Source: Evil Twin - They required twin sets of parallel train tracks to even move around, which sometimes had to be built in front of them.
Source: Cool, but Inefficient
Cite this Source
Twin and Parallel. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/parallel/twin
Parallel & Twin. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/parallel/twin>.
Twin or Parallel. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/parallel/twin.
Google Ngram Viewer shows how "parallel" and "twin" have occurred on timeline