A "simple analogy" is when you compare two things or ideas to explain or understand a complex concept in a way that is easy to grasp and straightforward. Full definition
Meher brought insatiable curiosity and a wonderful ability to explain complex problems with simple analogies and metaphors. (epicenter.tv)
I hope that simple analogy explains everything. (justarsenal.com)
What designates a learning object, what designates a «report» and who your learners are is all up for debate.The simplest analogy I have found is comparing an LMS to a DVD player, and a DVD disc represents your learning content. (elearningindustry.com)