By definition, grammar is a practical science that is responsible for the spelling, reading and proper use of the language. Grammar teaches us to use the language correctly.
It helps us to correctly describe our thoughts and feelings. Thanks to the knowledge of grammar, we get used to think more correctly. This information helps to preserve structure of the language.
However, such a description of the grammar is outdated and can only be used for past use. At that time, the topic was the language of writing and the so-called visual language.
Grammar confirms the integrity and authenticity of traditions, as well as to some extent the immutability of the language. In the modern view, the concept of grammar has changed in some way.
Until the eighteenth century, the language of philosophers was considered a verbal form of logic, which made it completely dependent on the unchanging laws of thought. Grammars were not only representatives of the language, but also thoughts.
However, from the 19th century until today, it is believed that language is a social phenomenon and, to some extent, a living organism, which allows it to develop according to its own conditions and laws.
Language, speech and auditory language (language auditif) were taken for the research topic, further from the concept of correctness and attitudes, which revealed a separate scientific field: Knowledge of the language (linguistics) Laws on the formation of linguistics, the laws of the language (loi linguistique).
Laws on the sounds of the language, the order of sounds in words, the changes to which they are subject, stress and tone.