Popups are integral components in web design. They are windows that appear suddenly on top of a website's content to convey information or promote a product or service. However, due to their intrusive and annoying nature, people tend to dislike them. This has led to many alternative names for popups. Some of the most commonly used synonyms include overlay, modal, interstitial, lightbox, hover, fly-in, and pop-over. These names describe popup's function, appearance, and behavior. Overlay and interstitial refer to popups that cover the entire site's content. In contrast, lightbox and hover popups appear on the foreground and only partially conceal the underlying content. Ultimately, regardless of their name, popups remain an effective tool for website owners.