What is the difference between law and constitution?

As nouns the difference between law and constitution is that law is (uncountable) the body of rules and standards issued by a government, or to be applied by courts and similar authorities or law can be (obsolete) a tumulus of stones while constitution is the act, or process of setting something up, or establishing something; the composition or structure of such a thing; its makeup.

As a interjection law is (dated) an exclamation of mild surprise; lawks.

Charter vs Constitution – What’s the difference?

As a noun charter is a document issued by some authority, creating a public or private institution, and defining its purposes and privileges.
As an adjective charter is leased or hired.
As a verb charter is to grant or establish a charter.

As a proper noun constitution is the supreme law of some countries, such as australia, ireland, and the united states.