Final answer:
The word 'causalgia' is stressed on the second syllable. Assonance involves repeating vowel sounds, and twinning the final consonant occurs when adding suffixes to words with a stressed final vowel in a consonant-vowel-consonant pattern. The trochee is a common stress pattern in English poetry, observed in words like 'mountain'.
Step-by-step explanation:
The word causalgia is pronounced with emphasis on the second syllable, thus it is pronounced as cause-AL-gia. The stress pattern follows the common English stress rule that often places emphasis on the penultimate (second to last) syllable when the last syllable contains a weak vowel such as 'ia'.
Assonance is a literary device that describes the repetition of vowel sounds in close proximity within a text. An example can be found in the phrase "my mouth wound itself around the soulful sounds," where the repeated 'ou' and 'ou' sounds create a melodious effect. Similarly, twinning or doubling the final consonant of a word plays an important role when adding suffixes in English. For example, when you twin the final consonant in words like 'run' to 'running,' it is because the word ends with a consonant-vowel-consonant pattern and the final vowel is stressed.
The trochee, which is a pattern of stressed followed by unstressed syllables, as in the word 'mountain', is the next most common foot after the iamb in English poetry.