What is the difference between Pipeline and Project in Jenkins?
In Jenkins Projects are Jobs. Jobs can contain pipelines but they can also contain other workflows.
Jenkins docs intro to pipeline
Jenkins Pipeline is a suite of plugins which supports implementing and integrating continuous delivery pipelines into Jenkins. Pipeline provides an extensible set of tools for modeling simple-to-complex delivery pipelines "as code" via the Pipeline DSL. 1
Job/Project: Jenkins seems to use these terms interchangeably. They all refer to runnable tasks that are controlled / monitored by Jenkins.
Pipelines have a DSL (domain specific language) that only works within a Jenkins pipeline job. Here is an example of how to run an existing Job / Project on a Linux node within a pipeline project.
// specify your linux node by namenode('linux') { // run the project job named your-other-job stage('run project') { build 'your-other-job' } }To dig deeper make sure to check out the helpful syntax generator built into Jenkins.