The volume examines lexical and idiomatic phenomena in various Indo-European languages, covering a wide range of linguistic and interdisciplinary studies while addressing both single-language issues and contrastive perspectives. The key topics include vocabulary and, in particular, phraseology in Slavic, Germanic and Romance languages across different areas of linguistic communication. It explores the role of vocabulary in general, as well as in therapeutic and specialised communication (e. g. mathematical or mathematically motivated phraseology and legal terminology), and in language acquisition. The volume also concentrates on proverbs and idiomatic expressions.