tail coat vs full dress

tail coat and full dress both are nouns.

Word	Noun	Adjective	Verb	Adverb
tail coat	Yes	No	No	No
full dress	Yes	No	No	No

As nouns, tail coat and full dress are synonyms defined as:

tail coat and full dress: formalwear consisting of full evening dress for men

Other synonyms of tail coat include dress suit, tailcoat, tails, white tie, white tie and tails.

tail coat (noun)	full dress (noun)
formalwear consisting of full evening dress for men	formalwear consisting of full evening dress for men