Is "you" and "grew" a slant, end, or internal rhyme? Or are they a different type of rhyme?
Let's break this down:
slant rhyme: rhyme in which either the vowels or the consonants of stressed syllables are identical
Slant rhymes occur when words are similar but don't actually rhyme. An example of words with slant rhyme is "years" and "yours". Their consonants are identical.
Another example is "eyes" and "light," which have the same vowel sounds but don't share a similar consonant pattern.
The words "you" and "grew" share their vowel sound and both end without any consonants, so these words actually do rhyme. They don't slant rhyme, which is a type of half-rhyme; these words actually do rhyme in the truest way possible.
end rhyme: rhyme of the terminal syllables of lines of poetry
internal rhyme: a rhyme created by two or more words in the same line of verse; a rhyme created by words within two or more lines of a verse
Both of these types of rhyme have to do with the positioning of the rhyming words within a piece of poetry. Without analyzing the poem these words appear in, it's impossible to say whether or not they're end rhymes or internal rhymes. The best we can say is that these words do rhyme.