What is the basic difference between Section / Rule / Article /Act

The difference between Section / Rule / Article / Act has been listed below: -
 

Section

A section refers to a distinct portion or provision of a legal code or set of laws, often establishing a particular legal requirement. For example- Section 5 of the Indian Contract Act.
 

Article

When any fundamentally critical document is framed or drafted which might be a grundnorm (a fundamental norm to support all other legal norms according to Kelsian pure theory of law) of that system at political, national or international level, then for the most part, it is separated from the customary municipal laws by referring to its provisos as articles rather than sections. For example - United Nations Charter, International Conventions, Constitution of a country, and so on, from where different laws or rules originate. Otherwise, municipal laws normally contain sections.
 

Rule

A Rule is a subsidiary enactment that helps in governing law. They are secondary in nature, meaning thereby that they don’t have an independent existence of their own. They are made to make the parent Act function. The rules provide for the details that have not been provided for in the Act, however, Rules by no means can go beyond the power conferred by the ACT, or extend the same.
 

Act

An Act is a law that is passed by the legislature. It is also known as a statute. However, most laws are not complete code in themselves, i.e. certain provisions as to their application or enforcement, etc. are deliberately left out by the legislature due to which rules come into the picture. For example- Companies Act 2013 is an Act. It has several rules governing its operations such as Companies (Incorporation) Rules 2014.