national assistance vs supplementary benefit

national assistance and supplementary benefit both are nouns.

Word	Noun	Adjective	Verb	Adverb
national assistance	Yes	No	No	No
supplementary benefit	Yes	No	No	No

As nouns, national assistance and supplementary benefit are synonyms defined as:

national assistance and supplementary benefit: benefits paid to bring incomes up to minimum levels established by law

Other synonyms of national assistance include social assistance.

national assistance (noun)	supplementary benefit (noun)
benefits paid to bring incomes up to minimum levels established by law	benefits paid to bring incomes up to minimum levels established by law