SHE uses parts of speech very well, for a girl.
When we say things, parts of speech administer the syntax.
noun ★★★★☆ 名 (name, famous) + 詞 (part of speech) = 名詞 (noun)
adjective ★★★☆☆ 形 (form) + 容 (appearance) + 詞 (part of speech) = 形容詞 (adjective)
verb ★★★☆☆ 動 (movement) + 詞 (part of speech) = 動詞 (verb)
lyrics ★☆☆☆☆ 歌 (sing) + 詞 (part of speech) = 歌詞 (lyrics)