perjury vs bearing false witness

perjury and bearing false witness both are nouns.

Word	Noun	Adjective	Verb	Adverb
perjury	Yes	No	No	No
bearing false witness	Yes	No	No	No

As nouns, perjury and bearing false witness are synonyms defined as:

perjury and bearing false witness: criminal offense of making false statements under oath

Other synonyms of perjury include lying under oath.

perjury (noun)	bearing false witness (noun)
criminal offense of making false statements under oath	criminal offense of making false statements under oath