Molecular conformation is a term used to describe the physical arrangement of atoms within a molecule. The term can be used interchangeably with molecular geometry, molecular structure, or molecular shape. Together, these terms refer to the three-dimensional arrangement of atoms within a molecule, which can influence the molecule's properties and interactions with others. Structural isomerism is another term that refers to the different arrangements of atoms within a molecule. This term is often used in organic chemistry to describe molecules with the same chemical formula but different structural arrangements. Other related terms include steric hindrance and bond angles, which describe how atoms and bonds within a molecule influence its conformation.