social welfare vs public assistance

social welfare and public assistance both are nouns.

Word	Noun	Adjective	Verb	Adverb
social welfare	Yes	No	No	No
public assistance	Yes	No	No	No

As nouns, social welfare and public assistance are synonyms defined as:

social welfare and public assistance: governmental provision of economic assistance to persons in need

Other synonyms of social welfare include welfare.

social welfare (noun)	public assistance (noun)
governmental provision of economic assistance to persons in need	governmental provision of economic assistance to persons in need