valve vs ticker

valve and ticker both are nouns.

Word	Noun	Adjective	Verb	Adverb
valve	Yes	No	No	No
ticker	Yes	No	No	No

valve (noun)	ticker (noun)
one of the paired hinged shells of certain molluscs and of brachiopods	a character printer that automatically prints stock quotations on ticker tape
the entire one-piece shell of a snail and certain other molluscs	a small portable timepiece
control consisting of a mechanical device for controlling the flow of a fluid	the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it