What are the themes of this two poem

Here are the themes for both poems:

A Poison Tree by William Blake

• The Destructive Nature of Suppressed Anger: The central theme is how unexpressed anger, especially towards an enemy, festers and grows into something harmful and ultimately deadly.
• Deception and Malice: The speaker's use of "smiles" and "soft deceitful wiles" to hide his true feelings highlights the malicious intent behind nurturing his wrath.
• Revenge and its Consequences: The poem illustrates the fatal outcome of nurtured hatred, culminating in the death of the foe, which is presented as the result of the speaker's deliberate cultivation of anger.

When the Lamp is Shattered by Percy Bysshe Shelley

• Transience and Impermanence: The poem repeatedly emphasizes how quickly physical objects, beauty, sound, and even memories fade, break, or are forgotten.
• Loss and Decay: It focuses on the inevitable decay of physical forms (lamp, cloud, lute) and the subsequent loss of the qualities they embody (light, glory, music).
• The Fragility of Existence: Through imagery of shattered and broken things, the poem underscores the delicate and easily destroyed nature of life, joy, and human connections.
• The Interdependence of Form and Essence: The lines "Survive not the lamp and the lute" suggest that the spiritual or aesthetic essence (like music or splendor) cannot exist independently of its physical vessel.