Alaskan pipeline vs Trans-Alaska Pipeline System

Alaskan pipeline and Trans-Alaska Pipeline System both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alaskan pipeline	Yes	No	No	No
Trans-Alaska Pipeline System	Yes	No	No	No

As nouns, Alaskan pipeline and Trans-Alaska Pipeline System are synonyms defined as:

Alaskan pipeline and Trans-Alaska Pipeline System: 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.

Alaskan pipeline (noun)	Trans-Alaska Pipeline System (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