grizzly bear vs silver-tip

grizzly bear and silver-tip both are nouns.

Word	Noun	Adjective	Verb	Adverb
grizzly bear	Yes	No	No	No
silver-tip	Yes	No	No	No

As nouns, grizzly bear and silver-tip are synonyms defined as:

grizzly bear and silver-tip: powerful brownish-yellow bear of the uplands of western North America

Other synonyms of grizzly bear include grizzly, silvertip, Ursus arctos horribilis, Ursus horribilis.

grizzly bear (noun)	silver-tip (noun)
powerful brownish-yellow bear of the uplands of western North America	powerful brownish-yellow bear of the uplands of western North America