Human language
set of all languages currently or formerly spoken, written, or signed by humans (excluding computer languages and mathematical/logically-formal languages)
modern language
varieties of Arabic
Ibero-Caucasian
Indo-European
Australian Aboriginal languages
historical language
Papuan
Eskimo-Aleut
pivot language
Nostratic
Indo-Pakistani Sign Language
Dravidian
Hmong–Mien
natural language
Niger–Congo
Uralic
Elamite
Sumerian
undeciphered language
Classification of Pygmy languages
dead language
Jewish languages
Araucanian
Sino-Austronesian
Austro-Tai
Iberian