An ''[[a priori]]'' language is created without reference to natural languages, while an ''[[a posteriori]]'' language is based on natural languages. Esperanto is an example of an ''a posteriori'' language.<ref>[http://interlanguages.net/PALvi.html A Planned Auxiliary Language - Chapter VI]</ref> | An ''[[a priori]]'' language is created without reference to natural languages, while an ''[[a posteriori]]'' language is based on natural languages. Esperanto is an example of an ''a posteriori'' language.<ref>[http://interlanguages.net/PALvi.html A Planned Auxiliary Language - Chapter VI]</ref> |