Equality is related to Equal. Equal is related to One. One is related to Grass. Grass is related to Garden. 
Stream can be used for Wash. Wash is related to Liquid. 
Equality <--RelatedTo--> Equal <--RelatedTo--> One <--RelatedTo--> Grass <--RelatedTo--> Garden 
Stream --UsedFor--> Wash <--RelatedTo--> Liquid 