Can I replace the Pipedrive terms (such as deal or contact person) into something else?
Let's say that instead of working with deals you'd prefer to be working with projects.
While terms like deals and people can't be natively replaced in Pipedrive, there is a free third-party workaround that may accomplish what you seek.
Try downloading a plugin called World Replacer II for the Google Chrome browser.
Here is how to set it up: