Combine is a synonym of Compound. Compound is a synonym of Agree. Agree is the opposite of Refuse. Refuse is related to Protest. 
Noise is related to Stuff. Stuff is related to Deposit. 
Combine <--Synonym--> Compound <--Synonym--> Agree <--Antonym--> Refuse <--RelatedTo--> Protest 
Noise <--RelatedTo--> Stuff <--RelatedTo--> Deposit 