Reminder is related to Bill. Bill is the opposite of Coin. Coin is related to Disk. Disk is a synonym of Circle. 
Counter can be used for Bathroom. you are likely to find Drawer in/at/on Bathroom. 
Reminder <--RelatedTo--> Bill <--Antonym--> Coin <--RelatedTo--> Disk <--Synonym--> Circle 
Counter --UsedFor--> Bathroom <--AtLocation-- Drawer 