Englishfor English speakers
chapter
Noun
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A chapter is a main division of a book.
We read chapter five in the blue textbook.
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A chapter is a local part of a larger organisation.
The Toronto chapter of the Red Cross is collecting blood today.
vii
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adjective
(= seven)
being one more than six
VII
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noun
(= seven)
the cardinal number that is the sum of six and one
operation
Noun
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An operation is a medical process, often opening the human body.
The doctors performed the operation in three hours.
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An operation is an action of a group of people working for a goal (often military).
The Army operation was a success.
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An operation is part or all of a business. small(often plural)/small
The company's East Coast operation was bigger than its West Coast operation.
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An operation is a symbol that is used to perform a specific operation (addition, subtraction, multiplication or division) in maths.
The plus symbol is used to perform a specific operation in maths which is addition.