elements (of a case)

Definition from Nolo’s Plain-English Law Dictionary

The component parts of a legal claim or cause of action. To win a lawsuit, a plaintiff must prove every element of a legal claim. For example, here are the elements of a breach of contract claim:
  1. There was a valid contract.
  2. The plaintiff performed as specified by the contract.
  3. The defendant failed to perform as specified by the contract.
  4. The plaintiff suffered an economic loss as a result of the defendant's breach of contract.

Definition provided by Nolo’s Plain-English Law Dictionary.