squawker vs squawk box

squawker and squawk box both are nouns.

Word	Noun	Adjective	Verb	Adverb
squawker	Yes	No	No	No
squawk box	Yes	No	No	No

As nouns, squawker and squawk box are synonyms defined as:

squawker and squawk box: the loudspeaker on an intercom or public address system

Other synonyms of squawker include intercom speaker.

squawker (noun)	squawk box (noun)
the loudspeaker on an intercom or public address system	the loudspeaker on an intercom or public address system
a person given to excessive complaints and crying and whining