Sacred is the opposite of Secular. Secular is the opposite of Holy. Holy is related to Marry. Marry is related to Alliance. 
Compound is a synonym of Join. Join is related to Meeting. Meeting is related to Mass. Mass is related to Liquid. 
Sacred <--Antonym--> Secular <--Antonym--> Holy <--RelatedTo--> Marry <--RelatedTo--> Alliance 
Compound <--Synonym--> Join <--RelatedTo--> Meeting <--RelatedTo--> Mass <--RelatedTo--> Liquid 