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In spoken Chinese, "词" and "词汇" are usually interchangeable. "词汇" means "词" as well, but they differ from each other in some cases.
词 (cí): word; speech or words in a poem, article or opera; a form of classical Chinese poetry originating in the Song Dynasty, which is called "宋词" (sònɡ cí).
词汇 (cí huì): vocabulary
"词" can be modified by a measure word, while "词汇" can not.
√ 这部词典一共有五万多个词。(zhè bù cí diǎn yí ɡònɡ yǒu wǔ wàn duō ɡè cí)
This dictionary has over 50,000 word entries.
√ 这个词是什么意思？(zhè ɡe cí shì shén me yì si)
What does this word mean?
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