historic vs. historical

RD4月号のネイティブがよく誤る語法の特集 "How to Sound Smarter - The Reader's Digest Version of those rules for talking and writing - the ones you missed in school" からです。
You almost never mean: Historical
You almost always mean: Historic
Why: In short, historic means "significant" ("a historic election") But if you intend "occurring in or relating to history," go with historical (think "historical data" or "a historical link between the two world wars").
これは微妙ですね。　"historic" は "significant" で、「歴史的な」と言いたい場合のみ "historical" を使えと言っていますが、辞書での "historic" の説明はどうか調べます。
・OneLook Quick Definitions: 1. important in history ("The historic first voyage to outer space") 2. belonging to the past; of what is important or famous in the past ("Historic victories")
・American Heritage Dictionary: 1. Having importance in or influence on history. 2. Historical
これだとやはり "historic" も. "historical" と同様な意味で使われる様ですが、後者の辞書には次ぎの注意書きがあるのでそれも読みましょう。
Usage Note: Historic and historical have different usages, though their senses overlap. Historic refers to what is important in history: the historic first voyage to the moon. It is also used of what is famous or interesting because of its association with persons or events in history: a historic house. Historical refers to whatever existed in the past, whether regarded as important or not: a minor historical character. Historical also refers to anything concerned with history or the study of the past: a historical novel; historical discoveries. While these distinctions are useful, these words are often used interchangeably, as in historic times or historical times.
なるほど、重要性や意義のある場合は "historic" で単に歴史に関係する場合は "historical" と覚えておけば良いでしょうか？　ネイティブにも微妙な単語のはずだ。