What is a difference between dna replication and rna transcription?

The difference is that DNA replication copies a whole side which was stripped into two at a time then the amino acids come in and replace each protein (G, C, T, A) and make another strand for DNA to make another cell. RNA is a piece of DNA and basically its just a smaller broken up piece and instead of using G, C, T, A, RNA would use G, C, U, A.