Meter is the pattern of stressed and unstressed syllables in a poem. There are many different meter schemes, but some of the most common include iambic pentameter, trochaic octameter, and dactylic hexameter.
Rhyme scheme is the pattern of rhyming words at the ends of lines in a poem. There are many different rhyme schemes, but some of the most common include ABAB, CDCD, and EFEF.
Alliteration, meter, and rhyme scheme are all important tools that poets can use to create musicality and meaning in their work. However, they are not the same thing, and they should not be confused with each other.