binary, twofold, coupled; see double, twin.
"dual." YourDictionary, n.d. Web. 14 October 2018. <http://thesaurus.yourdictionary.com/DUAL>.
dual. (n.d.). Retrieved October 14th, 2018, from http://thesaurus.yourdictionary.com/DUAL
Composed of two parts or things:
Consisting of two identical or similar related things, parts, or elements:
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