Assignment is a synonym of Offer. Offer is related to Attempt. 
Road is related to Rest. Rest is related to Easy. Easy is a synonym of Light. Light is similar to Pale. 
Assignment <--Synonym--> Offer <--RelatedTo--> Attempt 
Road <--RelatedTo--> Rest <--RelatedTo--> Easy <--Synonym--> Light <--SimilarTo--> Pale 