Answer:
Cations are ions with a net positive charge. 
 
Cation Examples: 
 
Silver: Ag+ 
Hydronium: H3O+ 
Ammonium: NH4+ 
Anions are ions with a net negative charge. 
 
Anion Examples: 
 
Hydroxide anion: OH- 
Oxide anion: O2- 
Sulfate anion: SO42-
Step-by-step explanation:
Cations and anions are both ions. The difference between a cation and an anion is the net electrical charge of the ion. Ions are atoms or molecules which have gained or lost one or more valence electrons, giving the ion a net positive or negative charge. If the chemical species has more protons than electrons, it carries a net positive charge. If there are more electrons than protons, the species has a negative charge. The number of neutrons determines the isotope of an element but does not affect the electrical charge.