Pipeline: A user-defined CD refinery template. The software of the pipeline specifies the whole construction method which entails the design, development, and distribution of a specification.
Node: A computer that is component of the Jenkins ecosystem and is supportive of pipeline execution.
Step: A simple assignment that informs Jenkins at a given moment in period what to do.
Stage: Describes a functionally separate thread of activities conducted through the whole pathway (build, test, deploy stages).