swearing vs expletive

swearing and expletive both are nouns.

Word	Noun	Adjective	Verb	Adverb
swearing	Yes	No	No	No
expletive	Yes	No	No	No

As nouns, swearing and expletive are synonyms defined as:

swearing and expletive: profane or obscene expression usually of surprise or anger

Other synonyms of swearing include curse, curse word, cuss, oath, swearword.

swearing (noun)	expletive (noun)
a commitment to tell the truth (especially in a court of law); to lie under oath is to become subject to prosecution for perjury	profane or obscene expression usually of surprise or anger
profane or obscene expression usually of surprise or anger	a word or phrase conveying no independent meaning but added to fill out a sentence or metrical line