I love this extension to learn new words while reading articles. But it usually doesn't show up in Chrome's context menu, I mean, right click the selected word, then context menu shows up but without "Mark the work '...'". This is quite weird, I don't know what happened, also tried upgrade Chrome but not resolved.
The Burning Vocabulary plugin falls under the 'Language Translation' category as it offers features related to learning and understanding words in various contexts
The specific subcategories that apply to this plugin are 'Translation Tools' for word meanings and translations, 'Text-to-Speech' for word audio, and 'Localization' for understanding words in various contexts such as events, news, social media, tech posts, and articles