The following article applies to Global Delivery Network, Application Resource File, Business Document, and CMS Connector project types.
A string is unique in a project, so if two identical strings exist in two separate projects, there would be two separate source strings that affect Words Under Management based on the number of languages in the projects.
Project 1: string1 has 10 words and project1 has 3 languages - you have 30 words.
Project 2: If the same string is captured but project 2 has only 1 language then you have added 10 words.
Total: 40 Words Under Management.