cardiac muscle vs ticker

cardiac muscle and ticker both are nouns.

Word	Noun	Adjective	Verb	Adverb
cardiac muscle	Yes	No	No	No
ticker	Yes	No	No	No

cardiac muscle (noun)	ticker (noun)
the muscle tissue of the heart; adapted to continued rhythmic contraction	a character printer that automatically prints stock quotations on ticker tape
	a small portable timepiece
	the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body