hunchbacked vs humpbacked

hunchbacked and humpbacked both are adjectives.

Word	Noun	Adjective	Verb	Adverb
hunchbacked	No	Yes	No	No
humpbacked	No	Yes	No	No

As adjectives, hunchbacked and humpbacked are synonyms defined as:

hunchbacked and humpbacked: characteristic of or suffering from kyphosis, an abnormality of the vertebral column

Other synonyms of hunchbacked include crookback, crookbacked, gibbous, humped, kyphotic.

hunchbacked (adjective)	humpbacked (adjective)
characteristic of or suffering from kyphosis, an abnormality of the vertebral column	characteristic of or suffering from kyphosis, an abnormality of the vertebral column