hatchback door vs hatchback

hatchback door and hatchback both are nouns.

Word	Noun	Adjective	Verb	Adverb
hatchback door	Yes	No	No	No
hatchback	Yes	No	No	No

As nouns, hatchback door and hatchback are synonyms defined as:

hatchback door and hatchback: a sloping rear car door that is lifted to open

Other synonyms of hatchback door include hatch, liftgate.

hatchback door (noun)	hatchback (noun)
a sloping rear car door that is lifted to open	a sloping rear car door that is lifted to open
	a car having a hatchback door