Cool is the opposite of Familiar. Familiar is a synonym of Intimate. Intimate is a synonym of Suggest. 
Demographic is related to Population. Population is related to Group. Group is related to Management. 
Cool <--Antonym--> Familiar <--Synonym--> Intimate <--Synonym--> Suggest 
Demographic <--RelatedTo--> Population <--RelatedTo--> Group <--RelatedTo--> Management 