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Difference between dual trace CRO and dual beam CRO

Following are main difference between dual trace CRO and dual beam CRO

Dual trace CRO Dual beam CRO
It is used single electron beam to display two traces. It is used two electron beams for displaying two signals.
A single vertical amplifier is used. Two vertical amplifiers are used for two beams.
It is not able to capture two fast transient events. It is captures two fast transient easily.
It cannot switch quickly between traces, so simultaneous display becomes difficult. It can display two traces simultaneously.
The two signals may or may not have same frequency. The two signals must have the same frequency or they must be harmonically related.
A single beam can be used for displaying multiple traces. Multiple beams are used for displaying multiple traces.
Two signals can be displayed on a dual trace oscilloscope. But, the two signals cannot be displayed together in real time. Two signals can be displayed simultaneously in real time.