sleuthing vs detective work

sleuthing and detective work both are nouns.

Word	Noun	Adjective	Verb	Adverb
sleuthing	Yes	No	No	No
detective work	Yes	No	No	No

As nouns, sleuthing and detective work are synonyms defined as:

sleuthing and detective work: a police investigation to determine the perpetrator

Other synonyms of sleuthing include detecting, detection.

sleuthing (noun)	detective work (noun)
a police investigation to determine the perpetrator	a police investigation to determine the perpetrator