Moreira da Rosa, Diego Soares Guedes, Leandro Landoni, Monica Silveira, Milene 2023 This paper investigates the role of language in interaction design and computer-mediated communication. It starts by distinguishing between human languages and computer languages. Human language, as the primary code used in text and voice-based communication, is critical in the majority of communication processes. We also analyze two methods of computer-mediated communication. First, interaction design based on semiotic engineering is investigated; followed by user-to-user computer-mediated communication. This paper provides insights into the design of user interfaces, cross-cultural communication, and social media by discussing the complexities of language in human-computer interaction and computer-mediated communication. The findings highlight the significance of language as the main component of effective communication involving humans and computers in various contexts. application/pdf https://localhost:5000/ark:/12658/srd1328211 https://susi.usi.ch/global/documents/328211 https://susi.usi.ch/documents/328211/files/SoaresGuedes_2023_HCIIb.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1007/978-3-031-48038-6_36 info:eu-repo/semantics/altIdentifier/ark/12658/srd1328211 info:eu-repo/semantics/openAccess CC BY HCI International 2023 – Late Breaking Papers. HCII 2023. Lecture Notes in Computer Science. - 2023, vol. 14054, p. 564–574 Language Multilingualism Communication models Computer-mediated communication Human-computer interaction info:eu-repo/classification/udc/004 Human languages in HCI : beyond user interface localization http://purl.org/coar/resource_type/c_5794