How to compare SIMILARITY not exact match in a string of text/description/summary

I am trying to create a formula that compares a New Intake Form's description/summary to completed and Archived Intake Work Form's to see if this is a project similar to what has already been worked on in the last 5 years. I am not looking for an exact match, but something similar enough to pull the Old "Intake Request ID" so we can determine if this is similar enough to avoid rework.

This formula I use to pull names that match a criteria so I am thinking it would be similar or maybe an Index/Collect instead.

=JOIN(COLLECT({Participant Email}, {Module}, Module@row, {Modules}, Modules@row, {Start Date}, [Finish Date]@row, {Control ID#}, [Control ID #]@row), CHAR(10))

I know this might be more complicated because I am comparing a string of text for similarities instead of exact matches but I figured I'd throw it out there.

Any ideas on how to do this would be EXTRMELY HELPFUL!!

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