noun
a person or thing that advances or promotes something
adjective
describing word that modifies a noun, in this case, it would be used to describe a specific type of advancer
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The advancer of the project presented a detailed plan to the board.
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The advancer in the group always comes up with new ideas.
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She's the ultimate advancer when it comes to getting things done.
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The advancer of technology is constantly pushing boundaries and innovating.