ticker vs digital watch

ticker and digital watch both are nouns.

Word	Noun	Adjective	Verb	Adverb
ticker	Yes	No	No	No
digital watch	Yes	No	No	No

As nouns, digital watch is a hyponym of ticker; that is, digital watch is a word with a more specific, narrower meaning than ticker:

ticker (noun)	digital watch (noun)
a character printer that automatically prints stock quotations on ticker tape	a watch with a digital display
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