Well, what you've got is a simple list, but when you put the list in a table, the structure of the table implies some sort of relationship among the items, e.g., everything in a certain column is related, everything in a row, etc. But there isn't really any relationship beyond the overall group type, e.g., Noun-Noun Collocations, so the reader will be distracted by trying to determine a relationship that doesn't exist.
Furthermore, if you put everything in a table, then the longest word in each collocation will dictate the column width, which will yield lots of wasted space, and you'll get line breaks that will also waste a lot of space, for example:
age
discrimination
What's more, now you have to use borders on the table, which makes things look even busier.
I would emphasize the group types, then put everything in columns, as in the attached file.
If you are still on a mission to put everything in a table, you'll find the list in tabular form at the bottom of the attached file. The way I did it was to do a wildcard search to find four sets of collocations, then replace the paragraph breaks with tabs, then select the groups of collocations and convert to tables.
Wildcard search:
Find: (*)(^13)(*)(^13)(*)(^13)(*)(^13)
Replace: \1^t\3^t\5^t\7^p
But I think your students will be better served by the simpler columnar layout, which you can do yourself in the future by selecting each grouping, then Layout > Columns and choose three columns.