Final answer:
The physical actions resulting in a criminal offence are known as 'Actus Reus.' It is the actual conduct that comprises the tangible components of a crime, distinct from the mental intent known as 'Mens Rea.'
Step-by-step explanation:
The physical acts by which a criminal offence is committed is known in Latin as Actus Reus. This term refers to the actual execution of a criminal deed—the actions or conduct that constitute the tangible components of a crime. In contrast, Mens Rea, which means 'guilty mind' in Latin, is the mental element of a person's intention to commit a crime, or their knowledge that one's action or lack of action would cause a crime to be committed. These two elements are fundamental to typical criminal cases, as establishing both is generally necessary to demonstrate the defendant's culpability.