What word refers to words that have similar meanings?

The word that refers to words with similar meanings is "synonyms." Synonyms are words that can be used interchangeably because they convey the same or very similar meanings. For example, "happy" and "joyful" are synonyms because they both describe a similar emotional state.

Understanding synonyms is important in reading and writing because they can enhance vocabulary and allow for more varied and expressive language. When writers use synonyms, they can avoid repetition and create a more engaging narrative or argument.

The other choices represent different concepts: antonyms are words with opposite meanings, homonyms are words that sound alike but have different meanings, and metonyms are words that are named after something associated with them. Therefore, the focus on words that share meanings distinctly identifies "synonyms" as the correct answer.