railroads
type: Concept
broader: transport infrastructure

harbors
type: Concept
broader: transport infrastructure

transport infrastructure
type: Concept
narrower: waterways
narrower: terminuses
narrower: ports
narrower: railroads
narrower: docks
narrower: harbors
narrower: roads
broader: transportation

waterways
type: Concept
broader: transport infrastructure

terminuses
type: Concept
broader: transport infrastructure

ports
type: Concept
broader: transport infrastructure

docks
type: Concept
broader: transport infrastructure

roads
type: Concept
broader: transport infrastructure

transportation
type: Concept
narrower: transport infrastructure

concepts
type: Collection
type: ConceptGroup
member: transport infrastructure