Differentiate between RNA polymerase and DNA polymerase?

Differences between RNA polymerase and DNA polymerase:

DNA polymerase	RNA polymerase
Synthesizes a ds DNA	Synthesizes a ss RNA
Requires a primer to begin the replication process	Does not require a primer to begin the transcription process.
Not capable of initiating a new strand	Capable of initiating a new strand
Active during S phase of interphase	Active during G1 and G2 phases of growth phase
Has a low error rate	Has a comparatively high error rate