Beckoner is a word that usually describes a person who is signaling or calling someone over. However, there are many different words that can be used instead of beckoner, depending on the context. In some cases, you might use words like summoner, caller, or inviter to describe someone who is beckoning someone else over. Other words you could use include flagger, signaler, or waver, depending on how the beckoning is being done. These synonyms all have different connotations and implications, so it's important to choose the right one based on the situation and the emotions or actions you want to convey.