Intercommunicate vs Liaise - What's the difference?

As verbs the difference between intercommunicate and liaise

is that intercommunicate is to communicate, one with another while liaise is to establish a liaison.

(intercommunicat)

To communicate, one with another

To be interconnected

(liais)

To establish a liaison.

To act between parties with a view to reconciling differences.

To cooperate, consult and discuss in order to come to a common solution.