Trunk can be used for Support. Support is a synonym of Hold. Hold is a type of Control. Control is related to Tower. 
Serving is related to Glass. Glass is related to Widow. Widow is related to Wife. 
Trunk --UsedFor--> Support <--Synonym--> Hold --IsA--> Control <--RelatedTo--> Tower 
Serving <--RelatedTo--> Glass <--RelatedTo--> Widow <--RelatedTo--> Wife 