petit larceny vs thievery

petit larceny and thievery both are nouns.

Word	Noun	Adjective	Verb	Adverb
petit larceny	Yes	No	No	No
thievery	Yes	No	No	No

As nouns, thievery is a hypernym of petit larceny; that is, thievery is a word with a broader meaning than petit larceny:

petit larceny: larceny of property having a value less than some amount (the amount varies by locale)
thievery: the act of taking something from someone unlawfully

Other hypernyms of petit larceny include larceny, stealing, theft, thieving.

petit larceny (noun)	thievery (noun)
larceny of property having a value less than some amount (the amount varies by locale)	the act of taking something from someone unlawfully