Alaskan pipeline vs trans-Alaska pipeline

Alaskan pipeline and trans-Alaska pipeline both are nouns.

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

As nouns, Alaskan pipeline and trans-Alaska pipeline are synonyms defined as:

Alaskan pipeline and trans-Alaska pipeline: an oil pipeline that runs 800 miles from wells at Prudhoe Bay to the port of Valdez

Other synonyms of Alaskan pipeline include Trans-Alaska Pipeline System.

Alaskan pipeline (noun)	trans-Alaska pipeline (noun)
an oil pipeline that runs 800 miles from wells at Prudhoe Bay to the port of Valdez	an oil pipeline that runs 800 miles from wells at Prudhoe Bay to the port of Valdez