I couldn't find an answer to this question by searching the archive. If it's duplicate please let me know, and I'll remove it.
I was wondeing if "work" (noun) is plural or singular? for example, I want to speak about the "previous work" (meaning previous published papers):
Is it correct to say:
I provide a high-level overview of the previous work, including "their" limitations.
Or I should say:
I provide a high-level overview of the previous work, including "its" limitations.
I also appreciate any suggestion for a more elegant way of saying that there are "niche" in the previous papers, that I'm going to highlight.