Englishfor English speakers
commission
Noun
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A commission is a group of people who work together to research or manage something for a government.
She was recently appointed to head the European commission on climate change.
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A commission is money that a salesperson receives for each sale.
You may have to pay commission to convert the dollars into local currency on your travels.
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The official appointment of an officer in a nation's armed forces.
Brummell resigned his commission when his regiment was posted to Manchester.
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A commission is a task to be undertaken.
My commission was only to deliver this message.
commission
Verb
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If you commission someone to do or create something, you formally ask them to do it.
The report commissioned by the Department of Health in 1989, contains guidelines on how best to manage and organise waiting lists.
expense
Noun
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An expense is something for which you spend money.
Food is a huge expense for many people around the world.
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An expense is an amount of money that you spend.
If your income is less than your expenses, you have a serious problem.
The company paid all of his expenses when he was in Shanghai.
The building was repaired at great expense.
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If you do mathx/math at the expense of mathy/math, mathx/math hurts mathy/math because it makes mathy/math have less money, less time, less social status, etc.
She often makes jokes at her own expense.
We have to decide whether safety at the expense of freedom is worth the cost.