Play is related to Rest. Rest is a synonym of Remain. Remain is related to Still. Still is the opposite of March. 
Say is related to Reporting. Reporting is a form of Report. Report is a synonym of Composition. 
Play <--RelatedTo--> Rest <--Synonym--> Remain <--RelatedTo--> Still <--Antonym--> March 
Say <--RelatedTo--> Reporting --FormOf--> Report <--Synonym--> Composition 