all-rounder vs expert

all-rounder and expert both are nouns.

Word	Noun	Adjective	Verb	Adverb
all-rounder	Yes	No	No	No
expert	Yes	Yes	No	No

As nouns, expert is a hypernym of all-rounder; that is, expert is a word with a broader meaning than all-rounder:

all-rounder (noun)	expert (noun)
a versatile person who is expert at many things	a person with special knowledge or ability who performs skillfully

all-rounder (adjective)	expert (adjective)
	having or showing knowledge and skill and aptitude
	of or relating to or requiring special knowledge to be understood