class of structures
type: Concept
preferred label: رده ساختارها @fa
related: age of structure

age of structure
type: Concept
broader: finitely-generated structure
preferred label: دوران ساختار @fa
related: infinite generic model
related: class of structures

finitely-generated structure
type: Concept
narrower: age of structure
preferred label: ساختارهای متناهی‌مولد @fa

infinite generic model
type: Concept
preferred label: مدل عام نامتناهی @fa
related: age of structure