Hopkins's use of "seared," "bleared," and "smeared" is an example of

Pronounce those words aloud. What do you hear?

http://www.answers.com/alliteration

http://www.answers.com/assonance

What do you think?

There are a number of "types" of rhyme. These would fit into more than one classification. Check this site:

http://en.wikipedia.org/wiki/Rhyme#Types_of_rhyme

Hopkins's use of the words "seared," "bleared," and "smeared" is an example of alliteration.

Alliteration is a literary technique where a sequence of words, usually at the beginning of neighboring words or syllables, have the same consonant sound. In this case, the repetition of the "s" sound in the words "seared," "bleared," and "smeared" creates a musical and rhythmic effect in the writing. Alliteration is commonly used in poetry and prose to add emphasis, create memorable phrases, or simply enhance the overall sound and flow of the language.