Algebraic structures are fundamental concepts in mathematics.

Proteins can have different quaternary structures.

The company is considering different capital structures for its expansion plans.

The flame structures danced in the night sky.

The hyperfine structures of the atoms were carefully measured.

Lewis structures are used to represent the bonding and electron distribution in molecules.

Mathematical structures are the foundation of modern mathematics.

The park has several play structures for children to enjoy.

The power structures in the country are deeply entrenched.

The primary structures of the building are made of steel beams and concrete columns.