communicate vs intercommunicate

communicate and intercommunicate both are verbs.

Word	Noun	Adjective	Verb	Adverb
communicate	No	No	Yes	No
intercommunicate	No	No	Yes	No

As verbs, communicate and intercommunicate are synonyms defined as:

As verbs, intercommunicate is a hypernym of communicate; that is, intercommunicate is a word with a broader meaning than communicate:

communicate (verb)	intercommunicate (verb)
transmit thoughts or feelings	transmit thoughts or feelings
transmit information	be interconnected, afford passage
be in verbal contact; interchange information or ideas
receive Communion, in the Catholic church
administer Communion; in church
join or connect
transfer to another