paraplegia vs paralysis

paraplegia and paralysis both are nouns.

Word	Noun	Adjective	Verb	Adverb
paraplegia	Yes	No	No	No
paralysis	Yes	No	No	No

As nouns, paralysis is a hypernym of paraplegia; that is, paralysis is a word with a broader meaning than paraplegia:

paraplegia: paralysis of the lower half of the body (most often as a result of trauma)
paralysis: loss of the ability to move a body part

Other hypernyms of paraplegia include palsy.

paraplegia (noun)	paralysis (noun)
paralysis of the lower half of the body (most often as a result of trauma)	loss of the ability to move a body part