dogtooth vs dogtooth violet

dogtooth and dogtooth violet both are nouns.

Word	Noun	Adjective	Verb	Adverb
dogtooth	Yes	No	No	No
dogtooth violet	Yes	No	No	No

As nouns, dogtooth and dogtooth violet are synonyms defined as:

dogtooth and dogtooth violet: perennial woodland spring-flowering plant; widely cultivated

Other synonyms of dogtooth include dog's-tooth violet.

dogtooth (noun)	dogtooth violet (noun)
a carved pyramidal ornament; used in 13th century England	perennial woodland spring-flowering plant; widely cultivated
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