Assure is a synonym of Guarantee. Guarantee is related to Promise. Promise is the opposite of Lie. Lie is a type of Fact. 
Stake is related to Tent. Tent is related to Temporary. Temporary is a synonym of Working. 
Assure <--Synonym--> Guarantee <--RelatedTo--> Promise <--Antonym--> Lie --IsA--> Fact 
Stake <--RelatedTo--> Tent <--RelatedTo--> Temporary <--Synonym--> Working 