When copying queries, be sure to keep the lines in order. You’ve switched the FLATTEN ... as ctx and the WHERE ctx..., which breaks the query.
Regarding the 2nd issue, I’ve already said the solution, put ctx.term.summary into the display line. In other words, use this query:
```dataview
TABLE ctx.term, ctx.fileContexts, ctx.term.summary
FROM #abbreviation
FLATTEN contexts AS ctx
WHERE contains(ctx.fileContexts, [[Abbreviation Test Document]])
SORT file.name ASC
```
I’m a little uncertain about the sorting, but doing both on the file and the term seems superfluous, and doing sort on the full file object is usually a bad idea, so it’s better to use just the name part (and avoid any issue with other parts being used for sorting (i.e. the folder part).
Update: Corrected a typo with some extra quotes