Contribute is a synonym of Bring. Bring is related to Lift. Lift is a synonym of Assistance. Assistance is related to Care. 
Effort is a synonym of While. While is a synonym of Patch. 
Contribute <--Synonym--> Bring <--RelatedTo--> Lift <--Synonym--> Assistance <--RelatedTo--> Care 
Effort <--Synonym--> While <--Synonym--> Patch 