A useful literary device for linking an unfamiliar concept to a more familiar one is an analogy. An analogy compares two different things by highlighting similarities between them, thus making the unfamiliar more relatable and understandable. This device can help clarify complex ideas or themes by framing them in the context of something that the audience already knows.
For instance, an author might compare the functioning of a cell to a factory, describing how different organelles perform specific roles akin to workers and machinery, thereby helping readers grasp the cellular processes by relating them to industrial operations.