humped vs humpbacked

humped and humpbacked both are adjectives.

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

As adjectives, humped and humpbacked are synonyms defined as:

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

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

humped (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