silvertip vs Ursus arctos

silvertip and Ursus arctos both are nouns.

Word	Noun	Adjective	Verb	Adverb
silvertip	Yes	No	No	No
Ursus arctos	Yes	No	No	No

As nouns, Ursus arctos is a hypernym of silvertip; that is, Ursus arctos is a word with a broader meaning than silvertip:

silvertip: powerful brownish-yellow bear of the uplands of western North America
Ursus arctos: large ferocious bear of Eurasia

Other hypernyms of silvertip include brown bear, bruin.

silvertip (noun)	Ursus arctos (noun)
powerful brownish-yellow bear of the uplands of western North America	large ferocious bear of Eurasia