The Science of Language is a field of study that encompasses four distinct disciplines: PHILOLOGY (9 letters), GRAMMAR (7 letters), LINGUISTICS (11 letters), and Phonetics (9 letters). PHILOLOGY is the study of the historical development of languages, while GRAMMAR is the study of the structure of language. LINGUISTICS is the scientific study of language, including its structure, use, and meaning. Finally, Phonetics is the study of the physical properties of speech sounds. Together, these four disciplines form the Science of Language, which is an important field of study for understanding how language works.