Alliteration

Repetition of a initial sound
Two vast and trunkless legs …
cold command,
The hand that mocked them and the heart that fed;
boundless and bare
lone and level sands stretch …………

Anastrophe

Inversion of the normal word order
… well those passions read (normally, read those passions well)
Enjambement (also spelled without the first e)
Carrying the sense of one line of verse over to the next line without a pause

… a shattered visage lies, whose frown,
And wrinkled lip, and sneer of cold command,
“Whose frown, And wrinkled lip is the enjambement.
Nothing beside remains. Round the decay
Of that colossal wreck, boundless and bare round the decay begins the enjambement.

Synecdoche

Substitution of a part to stand for the whole, or the whole to stand for a part
The hand that mocked them,