fielding vs handling

fielding and handling both are nouns.

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

As nouns, handling is a hypernym of fielding; that is, handling is a word with a broader meaning than fielding:

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

Other hypernyms of fielding include manipulation.

fielding (noun)	handling (noun)
(baseball) handling the ball while playing in the field	manual (or mechanical) carrying or moving or delivering or working with something
	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