storm cone vs storm signal

storm cone and storm signal both are nouns.

Word	Noun	Adjective	Verb	Adverb
storm cone	Yes	No	No	No
storm signal	Yes	No	No	No

As nouns, storm signal is a hypernym of storm cone; that is, storm signal is a word with a broader meaning than storm cone:

storm cone: a canvas cone hoisted to warn of high winds
storm signal: a signal announcing the approach of a storm (particularly a storm of marked violence)

storm cone (noun)	storm signal (noun)
a canvas cone hoisted to warn of high winds	a signal announcing the approach of a storm (particularly a storm of marked violence)