public office vs berth

public office and berth both are nouns.

Word	Noun	Adjective	Verb	Adverb
public office	Yes	No	No	No
berth	Yes	No	Yes	No

As nouns, berth is a hypernym of public office; that is, berth is a word with a broader meaning than public office:

Other hypernyms of public office include office, place, position, post, situation.

public office (noun)	berth (noun)
a position concerning the people as a whole	a job in an organization
	a bed on a ship or train; usually in tiers
	a place where a craft can be made fast

public office (verb)	berth (verb)
	secure in or as if in a berth or dock
	come into or dock at a wharf
	provide with a berth