Even if you do not plan to use Odoo's translation features, they can be great for changing forms to better fit a given business requirement.
Starting in Odoo 10, the base language is no longer loaded into the translation framework. Therefore, you will need to synchronize terms for the English language if you wish to make any changes to the translations it uses. Synchronizing the terms loads the terms for the specific language into Odoo.
To synchronize terms, go to Settings, and then under Translations choose Languages. In the row for the English language you will see an icon at the far-right side of the screen that will bring up a confirmation to synchronize the terms when clicked: ...
