the wordUsed before a word or phrase to refer to its meaning or wording. In expressions such as ไม่มีคำว่า..., it can mean “there is no such thing as...” or “...doesn't exist.”
the word; the termUsed before a word or concept to refer to its name or meaning. คำว่าอะไร means “what word?” or “what do you call it?” and คำว่า can also introduce an idea, as in “there is no such thing as…”