Many words are part of Inkwell's dictionary. This dictionary helps Inkwell recognize what you are writing despite errors. However, if Inkwell's crack recognition is less than par for you on certain words that you use frequently, you may consider adding them to the Word List. I have done this with family names and found it immensely helpful.
If a word is already in the Inkwell dictionary you will receive a notification like this:
Respond using Inkwell if you Can...