Classroom can be used for Education. Book can be used for Education. Book is a synonym of Engage. 
Nail is a synonym of Pound. Pound is a synonym of Compound. Compound is similar to Complex. Complex is a synonym of Detailed. 
Classroom --UsedFor--> Education <--UsedFor-- Book <--Synonym--> Engage 
Nail <--Synonym--> Pound <--Synonym--> Compound <--SimilarTo--> Complex <--Synonym--> Detailed 