blue-chip stock vs blue chip

blue-chip stock and blue chip both are nouns.

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

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

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

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