Farm is related to Production. Production is related to Pro. Pro is related to Produce. Produce is related to Grocery. 
Disorder is related to Disease. Syndrome is a type of Disease. 
Farm <--RelatedTo--> Production <--RelatedTo--> Pro <--RelatedTo--> Produce <--RelatedTo--> Grocery 
Disorder <--RelatedTo--> Disease <--IsA-- Syndrome 