dogtooth vs canine tooth

dogtooth and canine tooth both are nouns.

Word	Noun	Adjective	Verb	Adverb
dogtooth	Yes	No	No	No
canine tooth	Yes	No	No	No

As nouns, dogtooth and canine tooth are synonyms defined as:

dogtooth and canine tooth: one of the four pointed conical teeth (two in each jaw) located between the incisors and the premolars

Other synonyms of dogtooth include canine, cuspid, eye tooth, eyetooth.

dogtooth (noun)	canine tooth (noun)
a carved pyramidal ornament; used in 13th century England	one of the four pointed conical teeth (two in each jaw) located between the incisors and the premolars
one of the four pointed conical teeth (two in each jaw) located between the incisors and the premolars
perennial woodland spring-flowering plant; widely cultivated