word--class的用法和樣例：
例句
- It also allows us to take a word of a given category and form a new homophonous word of a different category.
它還允許我們拿一個已定詞類的單詞，造出一個同音異義且不同類的詞。 - Part of speech tagging, as part of syntactic tagging, is to mark each word's part of speech in a sentence, according to its definition and context.
詞性標註是根據詞義及其上下文信息，標註出其在句中所屬詞類的過程，屬於句法範疇的標註。
