Objects are the key puzzle piece of working with the toolkit. It can represent an arbitrary amount or type of data and/or metadata. But if you apply multiple different processes to a single data element, you might consider splitting this to multiple elements.
Data are the core puzzle element. A data element is a collection of files etc that somehow makes up a group of data that shares certain characteristics and are handled in a similar way.
Data are the core puzzle element. In this specific section, the focus is qualitative video data that defines a group of data that shares certain characteristics and are handled in a similar way.