plum vs berth

plum and berth both are nouns.

Word	Noun	Adjective	Verb	Adverb
plum	Yes	No	No	Yes
berth	Yes	No	Yes	No

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

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

plum (noun)	berth (noun)
a highly desirable position or assignment	a job in an organization
any of numerous varieties of small to medium-sized round or oval fruit having a smooth skin and a single pit	a bed on a ship or train; usually in tiers
any of several trees producing edible oval fruit having a smooth skin and a single hard stone	a place where a craft can be made fast

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

plum (adverb)	berth (adverb)
exactly
completely; used as intensifiers