cigarette vs coffin nail

cigarette and coffin nail both are nouns.

Word	Noun	Adjective	Verb	Adverb
cigarette	Yes	No	No	No
coffin nail	Yes	No	No	No

As nouns, cigarette and coffin nail are synonyms defined as:

cigarette and coffin nail: finely ground tobacco wrapped in paper; for smoking

Other synonyms of cigarette include butt, cigaret, fag.

cigarette (noun)	coffin nail (noun)
finely ground tobacco wrapped in paper; for smoking	finely ground tobacco wrapped in paper; for smoking