Analog materials originate in an analog or non-digital form. 

An archive is a repository or institution that preserves materials so they can be accessed in the future. In this curriculum we will be discussing digital archives. 

Born-digital files are multimedia files, formats and data that originate in digital form.

Data are a collection of numerical or textual observations which can then be cleaned, processed, and analyzed for many purposes.

A digital language archive is a digital repository that specializes in language data or content.

A digital repository is a repository meant for digital data.

Digitized materials originated in analog form and are later digitized to create a digital copy or surrogate. 

A repository is a place where things are stored. Some repositories store only digital items (digital repososities); others store only physical items (physical archives or repositories, brick-and-mortar archives); others store both digital and physical items. We use the term repository interchangeably with the term archive.