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Not a native speaker, but “Against” has many meanings, not all implying adversity/competition. https://www.merriam-webster.com/dictionary/against https://www.me
by Someone 4y ago
Not a native speaker, but “Against” has many meanings, not all implying adversity/competition. https://www.merriam-webster.com/dictionary/against https://www.merriam-webster.com/dictionary/against mentions, for example, “compared or contrasted with”, which covers the search and compare examples you gave.