Lover has it right. Technically, the topic is the title in white just above each post. the thread is the posts within the topic which may have offshoots leading to new topics. many people use them interchangeably and it really doesn't matter unless you are trying to explain it.
continuing… @Rukya, technically (can you tell i was a technician in a previous life? lol), this is YOUR topic AND thread, and you can put anything you like in here, within the bounds of forum posting rules and etiquette. you are also the mini-moderator of this topic/thread along with the official overall topic group moderator. Moderators, if i am incorrect in this, feel free to correct me as needed.