handling vs fielding

handling and fielding both are nouns.

Word	Noun	Adjective	Verb	Adverb
handling	Yes	No	No	No
fielding	Yes	No	No	No

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

handling: the action of touching with the hands (or the skillful use of the hands) or by the use of mechanical means
fielding: (baseball) handling the ball while playing in the field

handling (noun)	fielding (noun)
manual (or mechanical) carrying or moving or delivering or working with something	(baseball) handling the ball while playing in the field
the action of touching with the hands (or the skillful use of the hands) or by the use of mechanical means
the management of someone or something