In the analysis of Lewis Carroll's 'Jabberwocky' and Swenson's 'A Nasty Fright,' both poets utilize wordplay to create nonsense poetry that requires deeper thought to uncover meanings. Carroll sets a whimsical mood with exclamatory phrases reflecting relief and triumph, while Swenson depicts a darker tone with imagery symbolizing loss and death, particularly through the chipmunk's narrative. The contrasting use of sound and emotional connotations illustrates the different thematic focuses of each poem.