Hi again, They are very similar, and in many cases you can use either. One difference is that you may refer to a skill as something you learn or are able to get better at with study and practice, while an ability can be something you're born with. For example, I don't have the ability to reach the top shelf without a ladder (I'm short), but I have good problem solving skills, so don't worry, I can get the items down that I need.
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