Made changes to the nomenclature based on the TA1 quality meetings

[enoriega]

Summary

On 09/08/23, I explained the data model to the TA1 quality meeting. Mike Cafarella and Robyn Kozierok proposed some nomenclature changes to some models and fields.

This PR implements them.

The changes are merely cosmetic and don't affect either the structure nor the functionality of the code.

[enoriega]

@cl4yton Tagging you here because you are the architect of the format. Please make sure that we're not violating the spirit of your creation.