Last week while I was away taking my class Dr. Sam Olsen filled in on the "Don't Speak" series with the topic of Gossip. Since I wasn't there I don't know everything he spoke on but this one point he made pretty much sums up this topic. We (all humans) were created to glorify God. When we gossip we are not glorifying God. We are tearing people down instead of building them up.
On a side note but relating to words, here is a great article written by Jason Gray about how we use words. It's a long read but definitely worth it.
And here is the video to go along with the topic of gossip: