Equivocal words a. have meanings one person can guess at but another can't. b. have no known nonverbal signals to accompany them. c. are low-level abstractions. d. mean the same to all people and are thus redundant. e. have more than one commonly accepted definition.

Equivocal words E. have more than one commonly accepted definition.
Equivocal means ambiguous - that means that a word can mean several different things at the same time. What that particular word is going to mean in a sentence or a text is going to depend on the context. Without the context, it will be difficult to decide what the actual meaning of that particular word is because it could mean so many things.