hot dog vs wiener

hot dog and wiener both are nouns.

Word	Noun	Adjective	Verb	Adverb
hot dog	Yes	No	No	No
wiener	Yes	No	No	No

As nouns, hot dog and wiener are synonyms defined as:

hot dog and wiener: a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll

Other synonyms of hot dog include dog, frank, frankfurter, hotdog, weenie, wienerwurst.

hot dog (noun)	wiener (noun)
a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll	a smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll
a frankfurter served hot on a bun
someone who performs dangerous stunts to attract attention to himself