WordNet sense 1 (the inherent capacity for coming into being):

potency, potentiality

WordNet sense 2 (the difference in electrical charge between two points in a circuit expressed in volts):

voltage, electric potential, potential difference, potential drop

WordNet sense 3 (expected to become or be; in prospect):

likely, expected

WordNet sense 4 (concerned with or related to the future):

prospective

WordNet sense 5 (potentially existing but not presently evident or realized):

latent

WordNet sense 6 (existing in possibility):

possible