digital subscriber line vs DSL

digital subscriber line and DSL both are nouns.

Word	Noun	Adjective	Verb	Adverb
digital subscriber line	Yes	No	No	No
DSL	Yes	No	No	No

As nouns, digital subscriber line and DSL are synonyms defined as:

digital subscriber line and DSL: a generic name for digital lines that are provided by telephone companies to their local subscribers and that carry data at high speeds

digital subscriber line (noun)	DSL (noun)
a generic name for digital lines that are provided by telephone companies to their local subscribers and that carry data at high speeds	a generic name for digital lines that are provided by telephone companies to their local subscribers and that carry data at high speeds