“Et cetera,” abbreviated as “etc.,” is a Latin phrase used in English to mean “and other things” or “and so forth”. It indicates that a list is not exhaustive and that there are other items of the same type that are not explicitly mentioned.
Hangul (한글) is the Korean writing system, created in the 15th century by King Sejong to promote literacy. It is made up of letters—14 basic consonants (子音) and 10 basic vowels (母音)—which are combined into square-shaped syllabic blocks, each forming one syllable (音節) (e.g., “한” = ㅎ + ㅏ + ㄴ). These letters are designed to reflect the shape of the mouth or tongue when pronounced, making Hangul both logical and easy to learn. Hangul is celebrated for its efficiency, scientific design, and cultural importance, with its own public holiday called Hangul Day.
Tsundoku (積ん読) is a Japanese term that refers to the habit of acquiring books and letting them pile up without reading them.
An OG image (Open Graph image) is a metadata tag used in HTML to define the preview image shown when a webpage is shared on social media. It helps control how your link looks in platforms like Facebook, LinkedIn, or X (Twitter), enhancing engagement and branding. By specifying the image using <meta property="og:image" content="URL">, you control how your content appears in link previews, which plays a critical role in boosting click-through rates (CTR). Posts with eye-catching visuals generally attract more attention and engagement than plain text links. For best results, the OG image should be 1200×630 pixels with a 1.91:1 aspect ratio to ensure proper display across platforms.