nm. dualism, duality, doubleness

nm. dualism, state of consisting of two parts, duality, doubleness; belief that mind and matter exist separately (Philosophy); belief that good and evil are embodied in two separate divine beings or principles (Theology)

n. dualism, doubleness

(n.) = dualism.
Ex: As a consequence of the dualism of the research library and the public library different organisational schemes developed in the urban library system, which are characterised here in detail.