The term triarch can refer to a person who holds power over three others, or to a triumvirate ruling over a government or organization. Synonyms for the word triarch include triad, trinity, triumvirate, troika, threesome, and triptych. These words all convey the idea of three entities working together in some capacity. Alternately, the concept of triune, meaning composed of three parts or in three parts, can also be used as a synonym for triarch. The use of these various synonyms for triarch offers a range of vocabulary options for writers looking to convey the idea of three individuals or groups holding power or working together.