Here are a few options for a WordPress post tag description for “vocabulary” in Traditional Chinese, ranging in their focus:

**Option 1 (General & Clear):**

* **Description:** 詞彙 (cí huì)。 收集有關語言詞彙的資訊、定義、用法，以及相關的學習資源。
* **Translation:** Vocabulary (Cí huì). Information, definitions, usage, and related learning resources about language vocabulary.

**Option 2 (Emphasis on Learning):**

* **Description:** 學習詞彙 (xué xí cí huì)。 分享詞彙學習技巧、詞彙列表、以及幫助提升詞彙量的內容。
* **Translation:** Learning Vocabulary (Xué xí cí huì). Sharing vocabulary learning techniques, vocabulary lists, and content to help improve vocabulary.

**Option 3 (Focus on a Broad Scope):**

* **Description:** 各種詞彙 (gè zhǒng cí huì)。 文章涵蓋不同主題、不同語言的詞彙，包括專業術語和日常用語。
* **Translation:** Various Vocabularies (Gè zhǒng cí huì). Articles covering vocabulary from different topics and languages, including professional terminology and everyday expressions.

**Option 4 (Short and Sweet):**

* **Description:** 詞彙，字詞的集合。
* **Translation:** Vocabulary, a collection of words.

**Key Considerations when Choosing:**

* **Type of Blog/Website:** Choose the description that best reflects the focus and content of your blog.
* **Target Audience:** Consider your target audience and what they would be looking for when browsing tags.
* **SEO:** Include relevant keywords (e.g., 學習 (learning), 技巧 (techniques), 主題 (topics)) to help with search engine optimization.

**To input this into WordPress:**

1. Go to **Posts** -> **Tags**.
2. Find the tag “vocabulary” (or “詞彙” if you already have it created).
3. Click on **Edit** below the tag in the list.
4. In the “Description” box, paste one of the descriptions above.
5. Click **Update**.

I recommend Option 1 or Option 2 as a good starting point, then tailoring to fit your site’s needs.