This document discusses translation between languages and some of the challenges that can arise. It begins by listing some common ways to say "hello" in different languages like English, French, German, Chinese, and Egyptian. It then defines lexical meaning as the base meaning of a word without prefixes or suffixes. The document outlines several types of non-equivalence that can occur when translating between languages, such as culture-specific concepts, differences in how languages categorize meanings, physical perspectives, expressive meanings, word forms, frequency of use, and use of loan words.