proper trade
type: Concept
broader: trade
preferred label: ترید سره @fa

tradeoff method
type: Concept
broader: trade
preferred label: روش معامله @fa

trade
type: Concept
broader: design theory
narrower: proper trade
narrower: tradeoff method
preferred label: ترید @fa

design theory
type: Concept
narrower: trade
preferred label: نظریه طرح‌ها @fa