humpbacked vs gibbous

humpbacked and gibbous both are adjectives.

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

As adjectives, humpbacked and gibbous are synonyms defined as:

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

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

humpbacked (adjective)	gibbous (adjective)
characteristic of or suffering from kyphosis, an abnormality of the vertebral column	(used of the moon) more than half full
	characteristic of or suffering from kyphosis, an abnormality of the vertebral column