slipped disc vs herniated disc

slipped disc and herniated disc both are nouns.

Word	Noun	Adjective	Verb	Adverb
slipped disc	Yes	No	No	No
herniated disc	Yes	No	No	No

As nouns, slipped disc and herniated disc are synonyms defined as:

slipped disc and herniated disc: a painful rupture of the fibrocartilage of the disc between spinal vertebrae; occurs most often in the lumbar region

Other synonyms of slipped disc include ruptured intervertebral disc.

slipped disc (noun)	herniated disc (noun)
a painful rupture of the fibrocartilage of the disc between spinal vertebrae; occurs most often in the lumbar region	a painful rupture of the fibrocartilage of the disc between spinal vertebrae; occurs most often in the lumbar region