Weigh is related to Scale. Scale is related to Ratio. 
Living is related to Couch. Couch is related to Comfortable. Comfortable is similar to Sufficient. Sufficient is similar to Adequate. 
Weigh <--RelatedTo--> Scale <--RelatedTo--> Ratio 
Living <--RelatedTo--> Couch <--RelatedTo--> Comfortable <--SimilarTo--> Sufficient <--SimilarTo--> Adequate 