When it comes to flag signaling, it's important to have a variety of synonyms to use in order to convey the right message. Perhaps one of the most common words used in place of flag-signal is semaphore - a form of signaling using visual gestures. Other synonyms for flag-signal include pennant, banner, ensign, standard, and crest. Additionally, signal flags may also be used as a substitute for flag-signal, as these flags utilize specific colors and patterns to convey a particular message. Regardless of the specific terminology used, having a range of synonyms for flag-signal is an essential tool in effective communication.