grizzly bear vs silvertip

grizzly bear and silvertip both are nouns.

Word	Noun	Adjective	Verb	Adverb
grizzly bear	Yes	No	No	No
silvertip	Yes	No	No	No

As nouns, grizzly bear and silvertip are synonyms defined as:

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

Other synonyms of grizzly bear include grizzly, silver-tip, Ursus arctos horribilis, Ursus horribilis.

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