It doesn't. It's a blessing that they avoided the term "ubiquitous language" because that's almost exactly the dual of this concept, although people who have only ever heard the words and not dug any deeper won't know what the difference is.
‘protobuf specs dont have enough information for us to codegen iceberg tables so we will write a new codegen spec language’
So in the sense of "what do we do about terminology not matching across an organisation" this and DDD are literal opposite solutions: one says "erase differences with a central definition (and bear the coordination costs)" while the other says "encourage differences with local definitions (and bear the mapping costs)".