title: What is the standard naming to the POJOs inside a POJO?
body: <p>Say I have a bigger POJO, which consists of some other POJOs. What is the standard naming to these other POJOs within the bigger POJO? Most generally, I think we can call them <em>child POJO</em> or <em>sub-POJO</em>? But what is the standard naming? Like node? Element? Component? Section?</p>