Dunn et al. found no demonstrable shared vocabulary between these fifteen languages.
The lack of shared vocabulary between people and communication overhead is an additional challenge in these communities and projects.
This proposal is controversial, however; the shared vocabulary may be better explained as intensive borrowing due to long-term contact.
The shared vocabularies of film and video are one aspect.
It relies on a shared vocabulary of movements, each initiated by a distinct cue movement.
A shared vocabulary seems to help explain why his program works for many of those willing to plunk down the cash.
Singers of tonal music have a shared vocabulary to fall back on.
However this category cut across groups of languages with shared basic vocabulary.
Whether the remaining shared vocabulary is enough to establish relationships between the languages is a matter of dispute.
We need a shared cultural vocabulary to talk to each other, to discover in a new way what we share.