blue chip vs blue-chip stock

blue chip and blue-chip stock both are nouns.

Word	Noun	Adjective	Verb	Adverb
blue chip	Yes	No	No	No
blue-chip stock	Yes	No	No	No

As nouns, blue chip and blue-chip stock are synonyms defined as:

blue chip and blue-chip stock: a common stock of a nationally known company whose value and dividends are reliable; typically have high price and low yield

blue chip (noun)	blue-chip stock (noun)
a blue poker chip with the highest value	a common stock of a nationally known company whose value and dividends are reliable; typically have high price and low yield
a common stock of a nationally known company whose value and dividends are reliable; typically have high price and low yield