Usual vocab, go: Post. This single field of text by me is a post. Thread. You started a thread by clicking the add topic-button. Forum. Technically the same as community, sometimes used to mention the sections (Suggestions would thus be a forum). Forum section. See parenthesis. Opening post/OP. The first post in a thread. In this case, your post. Opening poster/OP. The person making the thread, in this case, you. Lock. Disabling a thread, so no one can post there. Flagging. Pressing the little red flag to the side of each post, to possible make the admins aware a post is breaking the rules. Not as effective as reporting to a mod, which you do by messaging the mod on their profile. Necro. A thread is old and has not been active for a long time, but someone decided to post in it regardless. Often especially if the post is spam.