stealing vs theft

stealing and theft both are nouns.

Word	Noun	Adjective	Verb	Adverb
stealing	Yes	No	No	No
theft	Yes	No	No	No

As nouns, stealing and theft are synonyms defined as:

Other synonyms of stealing include larceny, thievery, thieving.

stealing (noun)	theft (noun)
the act of taking something from someone unlawfully	the act of taking something from someone unlawfully
avoiding detection by moving carefully