bearing false witness vs lying under oath

bearing false witness and lying under oath both are nouns.

Word	Noun	Adjective	Verb	Adverb
bearing false witness	Yes	No	No	No
lying under oath	Yes	No	No	No

As nouns, bearing false witness and lying under oath are synonyms defined as:

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

Other synonyms of bearing false witness include perjury.

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