Internal rhyme: The rhyming of two words, one in the middle of a line and the other at the end of the line or in the middle of the next line.
There are multiple examples of internal rhymes in "The Raven", but I believe the answer you are looking for is "peering" and "fearing". That is, if you are on Plato and your question was "Which two words from 'The Raven' by Edgar Allan Poe are examples of internal rhyme?"
I know this answer is late, but I'm going to put it here for anyone still looking.