Talk:Vocal language

Is there any difference between "spoken" and "vocal" language?
What is the rationale for keeping the spoken language article separate from the vocal language article? Is there any distinction between these two terms? Jarble (talk) 16:13, 12 May 2013 (UTC)

Also, is there any distinction between speech and vocal language, or are they completely synonymous? Jarble (talk) 16:18, 12 May 2013 (UTC)