If you mean keywords by those used in maps, like {:some-key 1 :another-key 2}, yes, they have project wide semantics. However, these are just data. Changing th

If you mean keywords by those used in maps, like {:some-key 1 :another-key 2}, yes, they have project wide semantics. However, these are just data. Changing the name of a key in data is just a matter of global search/replacement. A fundamental point in the philosophy of Clojure is the emphasis on raw data. This is actually the reason why we love the language, because it lets us work directly with data, instead of dealing with language related complexity, such as API, type, syntax, etc. The Clojure community only realizes this advantage a couple of years ago. This Rich Hickey's talk in JavaOne gives a flavor of this idea: https://www.youtube.com/watch?v=VSdnJDO-xdg https://www.youtube.com/watch?v=VSdnJDO-xdg