The Ramayana makes extensive use of metaphors and similes.
One example of a metaphor occurs on pg. 15: "Dasaratha said in a clear voice, "Viswamitra, your coming here is a Godsend to me: like nectar to a mortal, rain to the famined, the birth of a son to the childless, like treasure to a poor man!"
The appearance of someone as spiritually advanced as Viswamitra is a wonderful and rare thing; the metaphor makes this clear by linking his appearance with nectar, water, the birth of children, and treasure.
One example of a simile occurs on page 18: "Rama was dark as a blue lotus and Lakshmana as fair as a moonbeam."
This simile vividly portrays the appearance of two main characters by comparing them to natural features that have deep religious connotations.