What are the similarities between prokaryotic ribosomes and eukaryotic ribosomes?

There are various similarities between prokaryotic ribosomes and eukaryotic ribosomes. One similarity is that both types or ribosomes are present in the cytoplasm. Another similarity is that they are both made of a small and large subunit. Each of their subunits is a ribonucleoprotein complex made from an rRNA and ribosomal proteins. A third similarity is that both types of ribosomes are cellular structures that regulate the decoding of a codon sequence into an amino acid sequence for protein synthesis. Both prokaryotic and eukaryotic ribosomes provide a site for protein synthesis. They both also are present in the cytoplasm of cells. Lastly, both of their small subunits are formed by a single strand of RNA.