Nonprofit is the opposite of Business. Business is related to Contract. Contract is the opposite of Expand. Expand is related to Stretch. 
Blow is related to Breath. Breath is related to Sigh. 
Nonprofit <--Antonym--> Business <--RelatedTo--> Contract <--Antonym--> Expand <--RelatedTo--> Stretch 
Blow <--RelatedTo--> Breath <--RelatedTo--> Sigh 