duplexity
/dʌˈplɛksɪti/Definitions
1. noun
A state or quality of being double or having two parts; duality.
“The concept of duplexity is crucial in understanding the relationship between the two opposing forces.”
2. noun
A condition or situation in which two things coexist or operate together.
“The duplexity of the system led to a significant increase in its overall efficiency.”