پلکان
narrower: پله
related: نردبان
related: ساختمان
broader: اجزای ساختمان
preferred label: stairs @en
type: Concept

نردبان
preferred label: ladders @en
type: Concept
related: پلکان

ساختمان
preferred label: constitution @en
type: Concept
related: پلکان

پله
preferred label: steps @en
type: Concept
broader: پلکان

ساختمان
preferred label: buildings @en
type: Concept
related: پلکان

اجزای ساختمان
preferred label: building components @en
type: Concept
narrower: پلکان