Terms are words or phrases used by specialists in a field to denote specific concepts. There are different types of terms including single-word terms, multi-word terms, and complex terms formed from combining basics with fused or hyphenated spelling. When translating terms from one language to another, techniques include tracing (replacing parts of speech), descriptive translation, transcription (recreating sound form using other language's letters), and transliteration (character-by-character transfer between alphabets). Problems translating English multi-component terms into Russian mainly relate to differences in language structures, as Russian requires morphological connections between components using case endings, whereas English connects components positionally without such dependencies.