Spread is a synonym of Unfold. Unfold is a synonym of Extend. Extend is related to Long. 
Rescue is related to Operation. Operation is related to Cell. Cell is related to Block. Block is related to Matter. 
Spread <--Synonym--> Unfold <--Synonym--> Extend <--RelatedTo--> Long 
Rescue <--RelatedTo--> Operation <--RelatedTo--> Cell <--RelatedTo--> Block <--RelatedTo--> Matter 