cricketer vs fielder

cricketer and fielder both are nouns.

Word	Noun	Adjective	Verb	Adverb
cricketer	Yes	No	No	No
fielder	Yes	No	No	No

As nouns, fielder is a hyponym of cricketer; that is, fielder is a word with a more specific, narrower meaning than cricketer:

Other hyponyms of cricketer include bowler, fieldsman, wicket-keeper.

cricketer (noun)	fielder (noun)
an athlete who plays cricket	a member of the baseball team that is in the field instead of at bat
	a member of the cricket team that is fielding rather than batting