I want a common word that could categorise both document (like presentation/portfolio etc.) and video. Any good ideas?
I need something simple enough that everyone can understand & not just the language experts.
That is, both a document and video are forms of media, because they can carry or convey something. You could further refer to a video as "visual media" and a document as "written media".
I learned linguistics while I was in Year 12, and I learned that text was the technical term, to include documents and videos, as the definition of a text was:
This is taken from Heinemann English Language 3&4.
A document would come under a written/visual text, that is, a text that has been written, and a text that can be seen. A video would come under the visual/auditory text type.
The definitions of "written", "visual", "auditory" texts are(from the textbook):
Thus, the general term I would advise, would be text, as the term that would encompass both a document and a video.