hot seat vs berth

hot seat and berth both are nouns.

Word	Noun	Adjective	Verb	Adverb
hot seat	Yes	No	No	No
berth	Yes	No	Yes	No

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

hot seat: a difficult position where you are subjected to stress and criticism
berth: a job in an organization

Other hypernyms of hot seat include office, place, position, post, situation.

hot seat (noun)	berth (noun)
a difficult position where you are subjected to stress and criticism	a job in an organization
an instrument of execution by electrocution; resembles an ordinary seat for one person	a bed on a ship or train; usually in tiers
	a place where a craft can be made fast

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