One definition of “equivocality” is the synonym “equivocalness” — both refer to the state of something having an ambiguous meaning. The root word, “equivocal,” means “having two or more significations” or “capable of more than one interpretation.” An obsolete usage of “equivocal” meant “called by the same name, but differing in nature or function.” It could be used to refer to two different tools, called by the same name but used for different purposes, perhaps in different industries. All of these words come from the Latin “aequivocus,” which breaks into “aequi-,” meaning “equal,” and “vox,” meaning “voice.”