Polarity
Part of speech: noun
Definition: the separation, alignment or orientation of something into two opposed poles either of the two extremes of such attributes The dipole-dipole intermolecular forces between the slightly positively-charged end of one molecule to the negative end of another or the same molecule.
Sign
Part of speech: verb
Definition: To write one's signature on (a document), thus showing authorship.To give legal consent by writing one's signature.To persuade to sign a contract.To write one's signature somewhere.To give autographs.To communicate using sign language.
Part of speech: noun
Definition: A visible indication.A clearly visible object, generally flat, bearing a short message in words or pictures.A traffic sign.A meaningful gesture.Any of several specialized non-alphabetic symbols.An astrological sign.Positive or negative polarity.A linguistic unit in sign language equivalent to word in spoken languages.sign language in generalAn omen.A property of the body that indicates a disease and, unlike a symptom, is unlikely to be noticed by the patient.
Example sentence: An escalator can never break: it can only become stairs. You should never see an Escalator Temporarily Out Of Order sign, just Escalator Temporarily Stairs. Sorry for the convenience.