日本語 Japanese Ask Questions Thread 8

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英語でも日本語でもOK
日本の方からのご協力も大歓迎です

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>28
Thank you very much! However, is something generally implied in modern Japanese by such use? The article you linked to basically states that equal entities (that we are able to group) should go with "to", isn't that the case with 生徒会長と副会長? So does に usage mean they are not equal? One follows the other?
Where is 対比的・対照的 component in this case?
I don't get examples 「梅にうぐいす」「月に雁(かり)」 they have there, what do they even mean?