Book excerpt: In an increasingly interconnected world, where distances dwindle and cultures interweave, the role of communication gains renewed significance. Language, our primary form of expression and comprehension, acts both as a border and a bridge for ideas, knowledge, and experiences. Amidst this complex linguistic interplay, this volume finds its purpose. Chapters herein delve into communication surpassing geographic and linguistic boundaries. As language professionals, educators, and researchers, we navigate the challenges of this landscape where languages blend and merge. These chapters analyse and inspire queries that arise whenever linguistic borders are crossed. From exploring the functions of intercomprehension to examining the impact of digital tools on borderless language education, each chapter reveals a facet of the theme. Topics span language methodologies, language acquisition, linguistic landscapes, and the growing importance of technology in teaching, to name but a few. Readers are invited to join us in exploring how communication shapes and is shaped by diverse linguistic environments. Together, we illuminate the threads that determine global interaction, delivering insight into the functioning of language in our interconnected world.