The word parallel has a couple of meanings, depending on the context in which it is used. Generally, it refers to lines, surfaces, or objects that are equidistant from one another and never meet, no matter how far they are extended. In geometry, for example, two lines that are parallel will always maintain the same distance between them.
In addition to its geometric meaning, parallel can also refer to situations, concepts, or experiences that are similar or analogous to each other. For instance, in literature or discussions, one might draw a parallel between two events to highlight their similarities.
Overall, the versatility of the term allows it to be used in various contexts, yet it always conveys a sense of similarity or non-intersection.