Let us find the examples:
Yes, Robert Frost’ poem “Fire and Ice” has used both symbols and understatement. You can find its answer here under the question “Can you find the figurative language in this poem?”
Whoever hath her wish, thou hast thy Will,
And Will to boot, and Will in overplus;
(Sonnet 135 by William Shakespeare)
In these first two lines, Shakespeare has capitalized the word “will” in the middle of the line. It means it should be the his first common name and he makes a pun on his name.