command post vs GHQ

command post and GHQ both are nouns.

Word	Noun	Adjective	Verb	Adverb
command post	Yes	No	No	No
GHQ	Yes	No	No	No

As nouns, command post and GHQ are synonyms defined as:

command post and GHQ: military headquarters from which a military commander controls and organizes the forces

Other synonyms of command post include general headquarters.

command post (noun)	GHQ (noun)
military headquarters from which a military commander controls and organizes the forces	military headquarters from which a military commander controls and organizes the forces