Alaska vs Alaskan pipeline

Alaska and Alaskan pipeline both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alaska	Yes	No	No	No
Alaskan pipeline	Yes	No	No	No

Alaska (noun)	Alaskan pipeline (noun)
a state in northwestern North America; the 49th state admitted to the union	an oil pipeline that runs 800 miles from wells at Prudhoe Bay to the port of Valdez