The article discusses the signs of law allowing to understand the law as a particular kind of social regulation. An important feature of the law is certainty, which creates conditions for a uniform understanding and application of law. The article describes the linguistic techniques that create preconditions for the formal certainty of the law: accuracy, clarity, simplicity, uniformity of terminology. The sociality of the law emphasizes that the law governs only relations between people who have the will and consciousness. The process of creating a law has peculiarities. Compliance with the procedural rules of law making is essential for the validity of law. Of great importance is the normativity of law. The feature combines non-personification of the addressee, universality and general obligation. Such signs of the law as stability and dynamism are considered in the unity. The article will be included into the textbook «Jurisprudence».