Word
Language, Manner Of Speech
noun
ことば
Yuri says 言葉 is the most common word for Word.
言葉 is probably often used as a truncation of 言葉つき. That's probably why 言葉 can also mean Language and Manner Of Speech.
A Word 言葉 is either a Single Character Word 単語, a Compound Word 熟語, or a Foreign Word 外来語