Word
Vocabulary
noun, の adjective
たんご
言葉 (ことば) Word, Language, Manner Of Speech
単語 (たんご) Word, Vocabulary
熟語 (じゅくご) Compound Word, Compound Kanji, Jukugo
外来語 (がいらいご) Foreign Word, Borrowed Word, Loanword
同音異義語 (どうおんいぎご) Homonym, Homophone
禁句 (きんく) Taboo Word, Taboo Phrase, Dirty Word, Bad Word
Yuri says 単語 usually refers to single-character words.
A Word 言葉 is either a Single Character Word 単語, a Compound Word 熟語, or a Foreign Word 外来語
He likes to tango たんご with Vocabulary.