The phrase "better word" is an idiomatic expression that means a more appropriate, accurate or suitable term to describe something. It can also imply using kinder language when expressing one's thoughts or opinions about someone or something.
Taking extra care and time to ensure that customers are satisfied will result in good word of mouth for your business, as well as a higher likelihood of a return customer. (petbusiness.com)
It's difficult to describe myself because it's not modest to say a lot of good words about my own character. (loveawake.com)