- gym shoe, sneaker, tennis shoe - a canvas shoe with a pliable rubber sole
--1 is a kind of shoe
--1 has particulars: plimsoll - fink, snitch, snitcher, stoolpigeon, stoolie, sneak, sneaker, canary - someone acting as an informer or decoy for the police
--2 is a kind of informer, betrayer, rat, squealer, blabber