Bush is etymologically related to Box. Box is related to Home. Home is related to Shelter. Shelter is related to Nest. 
Can is related to Afford. Afford is related to Buy. Buy is related to Involved. 
Bush --EtymologicallyRelatedTo--> Box <--RelatedTo--> Home <--RelatedTo--> Shelter <--RelatedTo--> Nest 
Can <--RelatedTo--> Afford <--RelatedTo--> Buy <--RelatedTo--> Involved 