Rat-a-tat and Wastebin

Rat-a-tat noun - A series of short sharp taps (as made by strokes on a drum or knocks on a door).

Wastebin and rat-a-tat are semantically related. In some cases you can use "Wastebin" instead a noun phrase "Rat-a-tat".

Wastebin noun - A bin that holds rubbish until it is collected.

Rat-a-tat and wastebin are semantically related. Sometimes you can use "Rat-a-tat" instead a noun "Wastebin".