There are some other easily mistyped words in this blog post: www.suzannearnold.com/blog/words-t...

Watch out for easily confused words — Suzanne Arnold

Spell check is great – but it can’t always recognise when you’ve got the wrong word (contact or contract, for example). A look at some common pairs of words that are easily mistyped

Another one to add to the list: treasure, treasury

naval and navel - I had that earlier this year

hordes and hoards in my neck of the woods