confab vs shoot the breeze

confab is a noun but shoot the breeze is not a noun.

Word	Noun	Adjective	Verb	Adverb
confab	Yes	No	Yes	No
shoot the breeze	No	No	Yes	No

As verbs, confab and shoot the breeze are synonyms defined as:

confab and shoot the breeze: talk socially without exchanging too much information

confab (noun)	shoot the breeze (noun)
an informal conversation

confab (verb)	shoot the breeze (verb)
talk socially without exchanging too much information	talk socially without exchanging too much information
have a conference in order to talk something over