| Subject | English | Welsh |
| comp., MS | app container | cynhwysydd rhaglenni (A runtime environment for Windows Store apps that's designed to minimize app impact on the computer by placing runtime restrictions on what apps can do) |
| comp., MS | container object | gwrthrych cynhwysydd (An object that can logically contain other objects. For example, a folder is a container object) |
| comp., MS | note container | cynhwysydd nodiadau (A flexible bounding box that contains the notes that you type or paste on a page) |