Revenue is a pretty good word to use for taxation. What is bad is the idea that it provides income for the state. Revenue comes from re + venir; means to come BACK. It encapsulates the idea that taxation returns unto Caesar what originally came from Caesar, the correct spend first, tax later order. Or, in other words, it is MMT compliant.
http://www.taxresearch.org.uk/Blog/2018/06/18/tax-revenue-means-to-bring-the-money-back-just-as-mmt-implies/