hot dog vs hotdog

hot dog and hotdog both are nouns.

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

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

hot dog and hotdog: 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, weenie, wiener, wienerwurst.

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

Other synonyms of hot dog include red hot.

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

hot dog and hotdog: someone who performs dangerous stunts to attract attention to himself

hot dog (noun)	hotdog (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	a frankfurter served hot on a bun
someone who performs dangerous stunts to attract attention to himself	someone who performs dangerous stunts to attract attention to himself