Trash is related to Dump. Machine can be used for Dump. 
Visible is similar to Visual. Visual is related to Eye. Eye is related to Party. Party is related to Crowded. 
Trash <--RelatedTo--> Dump <--UsedFor-- Machine 
Visible <--SimilarTo--> Visual <--RelatedTo--> Eye <--RelatedTo--> Party <--RelatedTo--> Crowded 