Some common homonyms that are spelled differently include:

• eye (what we see with) / I (me),
• hale (healthy) / hail (frozen rain),
• ad (short for advertisement) / add (to sum),
• ant (a social insect) / aunt (a female relative),
• flea (an insect that lives on dogs) / flee (to leave quickly),
• knead (to mix bread dough) / need (to require),
• maize (corn) / maze (a labyrinth),
• plain (simple) / plane (a flying machine),
• ring (jewelry worn on the finger) / wring (to twist the water out of),
• sea (large body of water) / see (to use your eyes),
• wail (to cry loudly) / whale (a large sea mammal).