Label of nodes belonging to vocab words

lets assume i have **5000** documents and their **5000** integer labels and in this corpus **we got 14000** unique words.
according to paper **total num of nodes will be** ==> total documents + vocab size = 5000+14000= **19000 nodes**
but **for documents we know the labels** ,how are you creating the **labels for vocab word (nodes)**
can u clarify on this