How do the poets use language and form to express their themes?

After reading both “Mariana” by Lord Alfred Tennyson, and “Porphyria’s Lover” by Robert Browning I am now able to adequately analyse as to how each of the poems use language and form to express their themes.
Although each of the poems are expressing feelings and thoughts of two different actions some of the poetic techniques are used in both poems- but may be used to depict different ideas. Or the same basic idea may have been approached with a different technique and so to change, or accentuate the mood of the poem.
The speaker lives in a cottage in the countryside. His lover, a blooming young woman named Porphyria, comes in out of a storm and proceeds to make a fire and bring cheer to the cottage. She embraces the speaker, offering him her bare shoulder. He tells us that he does not speak to her. Instead, he says, she begins to tell him how she has momentarily overcome societal strictures to be with him. He realizes that she "worship(s)" him at this instant. Realizing t...