Voice search refers to searching using spoken queries instead of typed ones. Voice input is most commonly used on smartphones, smart speakers, and in vehicles.
The biggest difference from traditional search lies in the phrasing. While typed queries are short and sometimes consist of keywords, spoken queries are phrased in completely natural sentences and often take the form of a question. Instead of “weather Ulm,” you’re more likely to ask, “What will the weather be like tomorrow in Ulm?” Voice queries are therefore often longer, phrased more naturally, and more specific.