The current dynamics of modern and postmodern societies generate a constant creation and flow of lexical units whose origin is every time more difficult to identify. This paper aims at reporting a research experience in the field of lexicography that was carried out in the region of Cundinamarca. Through audio-recording of informal oral interactions, interviews and questionnaires, it was intended to elaborate a glossary of dialectal nature. The conclusions show that due to the mobility of the people of Bogotá towards the different towns of Cundinamarca and vice versa, it is still problematical to determine a specific vocabulary.