Adequate is a synonym of Just. Just is a synonym of Reasonable. Reasonable is related to Logical. 
Truck is related to Automobile. Automobile is related to Transportation. Transportation is related to Car. Car is related to Expedition. 
Adequate <--Synonym--> Just <--Synonym--> Reasonable <--RelatedTo--> Logical 
Truck <--RelatedTo--> Automobile <--RelatedTo--> Transportation <--RelatedTo--> Car <--RelatedTo--> Expedition 