Is Susie saw seashell at seashore an example of alloiteration or onomatopoeia?

"Susie saw seashell at seashore" is an example of alliteration. Alliteration refers to the repetition of the same sound at the beginning of adjacent or closely connected Words. Onomatopoeia, on the other hand, is the formation of a Word from a sound associated with what it is named.