Consider a system-wide keyword merge.

The keyword "big foot" should probably be merged with "bigfoot", which is the correct spelling (https://www.merriam-webster.com/dicti... and https://en.wikipedia.org/wiki/Bigfoot). If "big foot" described a person with a large foot that's one thing, but all 17 instances refer to the legendary Sasquatch: https://www.imdb.com/search/keyword?k... For many of the titles, it can't be cleaned up by simply correcting "big foot" to "bigfoot" because both words are listed and the correction would get rejected as a duplicate.