Astable and monostable multivibrator using IC 555.

Multivibrator in which circuit is stable in either state and can be flipped from one state to other by an external trigger pulse is termed as__________.
Popular astable circuit is composed of__________.
Circuit which consist of a quasi-stable state is called__________.
Capacitor discharge interval in monostable circuits is known as__________.
Multivibrator which can produce a very short pulse or a much longer rectangular shaped waveform whose leading edge rises in time with externally applied trigger pulse is called__________.