Language is the most powerful system of communication between humans. It is a system of symbols and rules that allows for meaningful communication between individuals and across cultures. For a system of communication to be considered a language, it must meet certain criteria, including having standardized rules, a community of speakers to give it vitality, a sense of identity and history for its speakers, autonomy, and characteristics of being systematic yet flexible. The building blocks of any language include phonemes, morphemes, and grammatical rules that specify how these elements are combined.