peculator vs defalcator

peculator and defalcator both are nouns.

Word	Noun	Adjective	Verb	Adverb
peculator	Yes	No	No	No
defalcator	Yes	No	No	No

As nouns, peculator and defalcator are synonyms defined as:

peculator and defalcator: someone who violates a trust by taking (money) for his own use

Other synonyms of peculator include embezzler.

peculator (noun)	defalcator (noun)
someone who violates a trust by taking (money) for his own use	someone who violates a trust by taking (money) for his own use