The use of different forms to state the same idea in writing is referred to as equivalency. Here are a few examples:
Although she disagreed with some of the contractual language, Mary approved the investment.
OR
Despite her reservations concerning parts of the contract, Mary approved the investment.
Here are a number of sentence connectors providing equivalencies to express a wide range of meanings:
Sentence Connectors: Addition
Sentence Connectors: Opposition
Sentence Connectors: Cause / Effect
Sentence Connectors: Contrast
Sentence Connectors: Condition

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