This document discusses homophones, homonyms, and homographs. Homophones sound alike but may be spelled differently. Homonyms sound alike and are spelled alike. Homographs have the same spelling but different meanings or pronunciations. Examples are provided like "air" and "heir" as homophones, "pen" as both a writing tool and animal enclosure as homonyms, and "lead" as both a verb and metal as homographs. Homophones may or may not have the same spelling, homonyms have the same spelling and sound, and homographs share spelling but not always meaning or sound. These concepts help distinguish words that are easily confused.