Engage is a synonym of Wage. Wage is related to Employee. Employee is related to Guard. Guard is a different concept from Tackle. 
Fame is related to Dirt. Dirt is related to Vacuum. Vacuum is the opposite of Blow. 
Engage <--Synonym--> Wage <--RelatedTo--> Employee <--RelatedTo--> Guard <--DistinctFrom--> Tackle 
Fame <--RelatedTo--> Dirt <--RelatedTo--> Vacuum <--Antonym--> Blow 