Homozeotrope is a chemistry term that refers to a mixture of two or more substances that boil at the same temperature and have the same composition in both the liquid and vapor phases. There are several synonyms for this term, including azeotrope, constant boiling solution, and azeotropic mixture. Azeotrope is the most commonly used synonym and refers to a mixture that has a constant boiling point and a constant composition. Constant boiling solution is another term that is used to describe a mixture that has a fixed boiling point and cannot be separated into its constituent parts by distillation. Azeotropic mixture is a more general term that is used to describe any mixture that has a constant composition throughout its range of boiling.