Contrast: DNA stores genetic information encoded in the sequence of nucleotide monomers. RNA decodes DNA into instructions for linking together a specific sequence of amino acids to form polypeptide chain. DNA is a deoxyribose, while RNA is a ribose. DNA's fourth nitrogenous base is Thymine, while RNA's is Uracil. DNA is 2 strands in a double helix, while RNA is single stranded. DNA only comes in one form, while RNA can come in many forms.
Source: Chp 3. Powerpoint slides: 48,51