There is alliteration in the phrases “wanted wear" and "first for." There is a lot of repetition of sounds--assonance, to be specific. For example in the first line, there is repetition of the "o" sound when it says, "Two roads diverged in a yellow wood."

The ‘oa’ of roads and the ‘ow’ of yellow have the same vowel sound.

There is repetition of the "a" sound in the line “And be one traveler, long I stood," in the "a" of and as well as the "a" of traveler.

There is repetition of the "oo" sound in the line "And looked down as far as I could,” in the oo of looked and the ou of could.

There is repetition in the phrase “ages and ages since" as the word ages is repeated and two lines prior there is repetition of the word "I" in the line “I doubted if I should ever come back."