In a sonnet can two rhyming words be the same?

No, in a sonnet, two rhyming words cannot be the same. A sonnet is a 14-line poem with a specific rhyme scheme. The rhyme scheme for a Shakespearean sonnet is ABAB CDCD EFEF GG, and the rhyme scheme for a Petrarchan sonnet is ABBA ABBA CDCDCD. In both of these rhyme schemes, each rhyme is with a different word.