Curriculum is related to Course. Course is related to Setting. Setting is related to Stage. Stage is a synonym of Step. 
Ranch is related to Valley. Valley is related to Desert. Desert is related to Ecosystem. 
Curriculum <--RelatedTo--> Course <--RelatedTo--> Setting <--RelatedTo--> Stage <--Synonym--> Step 
Ranch <--RelatedTo--> Valley <--RelatedTo--> Desert <--RelatedTo--> Ecosystem 