dipped vs swaybacked

dipped and swaybacked both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dipped	No	Yes	No	No
swaybacked	No	Yes	No	No

As adjectives, dipped and swaybacked are synonyms defined as:

dipped and swaybacked: having abnormal sagging of the spine (especially in horses)

Other synonyms of dipped include lordotic, swayback.

dipped (adjective)	swaybacked (adjective)
having abnormal sagging of the spine (especially in horses)	having abnormal sagging of the spine (especially in horses)