This article deals with some matters related to two terms, specialised language and technical language, and the type of relations between them. Before attempting to present the features characterising specialised languages, it is necessary to recall the continuity between general language and the language referred to as specialised to reach the idea that specialised languages were rather inclined to indicate learned and written forms. And yet, less-developed societies, in traditional – and sometimes even modern – technical domains of activity, make use of the oral language predominantly. However, this aspect is by no means covered by the term specialised language which prioritises language as a system (in the Saussurian sense). The use of the term technical language, in the view of its creators, has the advantage of being applicable to the oral as well as to the written language and could thus assume a more generic character compared to that of specialised language.