Such as, “catbird” and “cat” in line a person and “loathes” and “loved” in the final two lines of the final stanza. The two poets use unconventional imagery by extended metaphors to investigate the complexities of love, one example is an onion and a frozen river By way of example, https://kingslists.com/story19951300/5-tips-about-valentine-day-poem-you-can-use-today