The word bi-form is used to describe something that has two forms or is capable of having two forms. Some synonyms of bi-form include bifurcated, dualistic, dichotomous, binary, twofold, dual, and double. Bifurcated refers to the division of something into two parts or branches. Dichotomous means something is divided into two parts that are completely opposite. Binary and twofold imply that something is comprised of two components or elements. Meanwhile, dualistic and dual both suggest that something has two aspects or qualities, while double can refer to something that is twice as much or having two of something. Ultimately, these synonyms can provide a rich vocabulary to describe a bi-form object or concept.