What is Passive linear bilateral network?

If I divide the term into Words as

(Passive + Linear + Bilateral ) Network

then it would be easier to understand.

1st of all, Passive Network is a network that includes **passive electrical / electronic components.

Then, Linear Network is consists of passive electrical / electronic components whose parameters such as resistance, capacitance or inductance are constant with respect to current or voltage and in such network each voltage or current source act independently of each other.

After that, Bilateral Network is the network in which the magnitude of current remains the same when the voltage polarity is reversed.

So, A Passive linear bilateral network includes passive components that exhibit linearity and at the same time magnitude of current is independent of the polarity of voltage.

** Passive electronic components are Resistor, Inductor or Capacitor, they by themselves are not capable of amplifying or processing an electrical signal.