Structure element
narrower: Atom
narrower: Shell
narrower: Node
narrower: Curved beam
narrower: Beam
narrower: Base
narrower: Lattice
narrower: Unit cell
broader: Structure (Material)
type: Concept

Atom
type: Concept
broader: Structure element

Shell
type: Concept
broader: Structure element

Node
type: Concept
broader: Structure element

Curved beam
type: Concept
broader: Structure element

Beam
type: Concept
broader: Structure element

Base
type: Concept
broader: Structure element

Lattice
type: Concept
broader: Structure element

Unit cell
type: Concept
broader: Structure element

Structure (Material)
type: Concept
narrower: Structure element