disposal · noun U /dɪˈspoʊ.zəl/
disposal
B2 when you get rid of something, especially by throwing it away
Dictionary examples:
waste disposal
the disposal of hazardous substances
Learner example:
Nowadays waste disposal and environmental protection has become one of the most important questions of our life in a world with environmental catastrophes. (First Certificate in English; B2; Hungarian)
at sb's disposal
B2 available for you to use at any time
Dictionary example:
We will have a car at our disposal for the whole trip.
Learner example:
But on Wednesday morning I'm at your disposal. (First Certificate in English; B2; Russian)