domestic dog vs canid

domestic dog and canid both are nouns.

Word	Noun	Adjective	Verb	Adverb
domestic dog	Yes	No	No	No
canid	Yes	No	No	No

As nouns, canid is a hypernym of domestic dog; that is, canid is a word with a broader meaning than domestic dog:

domestic dog: a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds
canid: any of various fissiped mammals with nonretractile claws and typically long muzzles

Other hypernyms of domestic dog include domestic animal, domesticated animal, canine.

domestic dog (noun)	canid (noun)
a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds	any of various fissiped mammals with nonretractile claws and typically long muzzles